FR3155689A1 - Method and device for selecting a plurality of cosmetic products and associated computer program - Google Patents

Abstract

The invention relates to a computer-implemented method for selecting a plurality of cosmetic products suitable for a subject, the method comprising the steps of: - determining (E2) a skin typology of the subject based on a skin aging stage parameter, an oxidation factor exposure parameter, and a sebum production parameter, - determining (E4) at least one item of skin concern data for the subject, and - selecting (E10) the plurality of cosmetic products based on the skin typology and the skin concern data of the subject, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology of the subject and the skin concern data of the subject. Figure to be published with the abstract: Fig. 2

Description

Method and device for selecting a plurality of cosmetic products and associated computer program

The present invention relates generally to the selection of suitable cosmetic products for a subject.

The invention relates more particularly to a method and a device for selecting a plurality of cosmetic products. It also relates to an associated computer program.

The present invention finds a particularly advantageous application in the context of cosmetic products for the face.

STATE OF THE ART

The range of cosmetic products available today is vast. It's not always easy for a person to find the product(s) best suited to them.

When it comes to facial cosmetics, it's well known to choose the right products based on the individual's skin type. The different skin types include normal, dry, oily, and combination skin. These categories are based primarily on an assessment of the individual's sebum production. The cosmetic products offered to an individual are then tailored to the individual's skin type.

However, the classification of skin types used is imprecise and the cosmetic products offered are not necessarily those best suited to the subject concerned.

It is also known to refine the classification of skin types by taking into account, for example, the age of the subject (and indirectly, the stage of aging of their skin). The cosmetic products offered to each subject are a little more appropriate due to the additional consideration of this aging factor.

Furthermore, if the subject has certain skin problems, such as redness or dark circles, they are often offered an additional cosmetic product to treat these imperfections. Generally, each imperfection is treated with a specific cosmetic product, without taking into account the subject's skin type. The latter then ends up with a multitude of cosmetic products, which in practice they do not use or use very little.

The present invention therefore aims to improve the selection of cosmetic products for a subject, taking into account their skin type but also other skin concerns that the subject might have without increasing the number of products that the subject would have to use.

More particularly, the invention relates to a computer-implemented method of selecting a plurality of suitable cosmetic products for a subject, the method comprising steps of:
- determination of a skin typology of the subject on the basis of a parameter of skin aging stage, a parameter of exposure to oxidation factors and a parameter of sebum production,

- determination of at least one piece of data concerning the subject's skin concerns, and

- selection of the plurality of cosmetic products according to the skin typology and the skin concern data of the subject, the selection being implemented in such a way as to optimize the number of cosmetic products corresponding to the skin typology of the subject and the skin concern data of the subject.

Thus, advantageously according to the invention, the selected cosmetic products are adapted to the subject's skin typology and make it possible to respond to a skin concern that the subject wishes to improve.

In addition, the selection of these cosmetic products is carried out in such a way as to optimize the number of cosmetic products and to favor cosmetic products satisfying the skin concern and skin typology. This then makes it possible to avoid proposing a specific cosmetic product for each skin concern that the subject wishes to improve. The selection of cosmetic products is therefore improved.

In addition to the characteristics which have just been mentioned in the preceding paragraph, the selection method according to one aspect of the invention may have one or more complementary characteristics among the following, considered individually or according to all technically possible combinations:
- the determination of the subject's skin concern data is implemented through a facial analysis of the subject;
- facial analysis of the subject includes steps of:
(a) provision, by the subject, of data relating to the condition of the subject's skin and/or the subject's environment and/or the subject's lifestyle and/or a characteristic of the subject, and
(b) processing the data provided by the subject in order to determine the skin concern data;
- the processing of the data provided is implemented by determining a score based on the data provided by the subject;
- the facial analysis of the subject comprises a step of analyzing at least one image of the subject's face so as to identify the skin concern data;
- the cosmetic product is a moisturizer, a serum, a makeup remover, a cleansing product, a hydrosol and/or a vegetable oil;
- the skin concern is a rash, dry skin, skin abnormality or skin imperfection;
- a step of determining an incompatibility parameter associated with the subject is provided, the selection step being implemented taking into account said incompatibility parameter;
- the incompatibility parameter is a pregnancy and/or an allergy to a molecule and/or a sensitivity parameter of the subject's skin;
- the incompatibility parameter is an incompatibility parameter between two cosmetic products;
- a stage of inventorying available cosmetic products is planned,

the selection of the plurality of cosmetic products being a function of the census of available cosmetic products so that the cosmetic products of the plurality of cosmetic products selected correspond to available cosmetic products;
- a step is planned to determine another piece of data on the subject's skin concerns,
the selection of the plurality of cosmetic products being implemented based on the skin typology, the subject's skin concern data and the subject's other skin concern data, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology, the subject's skin concern data and the subject's other skin concern data;
- the selection step is implemented, initially, based on the subject's skin concern data and the subject's other skin concern data, then in a second stage based on the skin typology;
- a step of determining a plurality of data on the subject's skin concerns is provided,
the selection of the plurality of cosmetic products being implemented based on the skin typology and the plurality of skin concern data of the subject, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology and the plurality of skin concern data of the subject; and
- the selection step is implemented, initially, based on the plurality of skin concern data taken sequentially, then, in a second stage, based on the subject's skin typology.

The invention also relates to a device for selecting a plurality of cosmetic products suitable for a subject, the selection device comprising a processor and a storage device, the processor comprising:
- a first module for determining a skin typology of the subject on the basis of a parameter of skin aging stage, a parameter of exposure to oxidation factors and a parameter of sebum production,

- a second module for determining at least one item of data concerning the subject's skin concerns, and

- a module for selecting the plurality of cosmetic products based on the skin typology and the skin concern data of the subject, the selection being implemented in such a way as to optimize the number of cosmetic products corresponding to the skin type and the skin concern data of the subject.

The invention also relates to a computer program comprising instructions executable by a processor and designed to implement a selection method as introduced previously when these instructions are executed by said processor.

BRIEF DESCRIPTION OF THE FIGURES

The figures are presented for information purposes only and in no way limit the invention.

FIG. 1 represents, in functional form, an example of a device for selecting a plurality of cosmetic products suitable for a subject in accordance with the invention,

FIG. 2 represents, in the form of a flowchart, a first example of a method for selecting a plurality of cosmetic products suitable for a subject in accordance with the invention, and

FIG. 3 represents, in the form of a flowchart, a second example of a method for selecting a plurality of cosmetic products suitable for a subject in accordance with the invention.

DESCRIPTION D E SIZE E AND OF AT LEAST ONE MODE OF R E ALISATION

The present invention relates to the selection of cosmetic products suitable for a subject. More particularly, the invention aims to select the most suitable cosmetic products for the subject. As described below, this selection of cosmetic products is implemented taking into account the characteristics of the subject's skin but also specific skin conditions that the subject wishes to reduce or improve. As also described below, the selection of cosmetic products can also be implemented taking into account external factors.

In this description, the term "cosmetic product" means any substance or mixture intended to be placed in contact with the superficial parts of the human body (epidermis, hair and capillary systems, nails, lips and external genital organs) or with the teeth and oral mucous membranes with a view, exclusively or mainly, to cleaning them, perfuming them, changing their appearance, protecting them, keeping them in good condition or correcting body odors. In other words, a cosmetic product is here a non-medicinal preparation intended for body care, and more particularly here for facial care. The cosmetic products concerned by the present invention are, for example (and in a non-exhaustive manner) a moisturizing product (for example a moisturizing cream), a serum, a tonic product (for example a tonic lotion), a makeup remover product, a cleansing product, a lotion (for example a hydrosol), a sunscreen product, a tinted care product and/or an oil (for example a vegetable oil).

There FIG. 1 represents, in functional form, a device 1 for selecting a plurality of cosmetic products suitable for a subject (also referred to as selection device 1 in the following).

As shown in the FIG. 1 , the selection device 1 comprises a processor 2 and a storage device 4.

The storage device 4 is for example a hard disk or a memory. The storage device 4 is here designed to store the various data involved in the selection process described below. It can also store information concerning the cosmetic products. This information relates for example to the availability of these cosmetic products, to possible incompatibilities between cosmetic products or to recommendations and contraindications for use.

The device 1 also comprises a set of functional modules. It comprises, for example, a first determination module 10, a second determination module 12 and a selection module 15.

Each of the different modules described is for example implemented by means of computer program instructions stored in the storage device 4 and designed to implement the module concerned when these instructions are executed by the processor 2 of the selection device 1.

However, as a variant, at least one of the aforementioned modules may be produced by means of a dedicated electronic circuit, for example an application-specific integrated circuit.

In other words, the tracking method according to the invention and described in the remainder of the document is implemented here by computer.

There FIG. 2 is a flowchart representing a first example of a method for selecting a plurality of cosmetic products suitable for a subject in accordance with the invention.

The selection method according to this first example is implemented here by the processor 2. Generally, this selection method according to this first example is implemented by computer.

Prior to the implementation of the first step E2 of the selection method, it is considered that the storage device 4 of the selection device 1 stores various data concerning the cosmetic products. In particular, it stores data on the availability of the cosmetic products. It can also store data on the compositions of the cosmetic products. The storage device 4 can also store incompatibility data concerning the cosmetic products with each other. This concerns, for example, incompatibility with other molecules or data on contraindications for use (for example in the case of pregnancy).

As shown in the FIG. 2 , the selection process begins at step E2. During this step, the processor 2 determines the skin typology of the subject concerned.

In this description, the term “skin typology” means a characterization of the subject’s skin taking into account three parameters: a skin aging stage parameter, a parameter of exposure to oxidation factors and a sebum production parameter.

The skin aging stage parameter allows us to characterize the degree of aging of the subject's skin.

The skin aging stage is characterized in particular by the appearance of wrinkles, a loss of skin elasticity, a change in the structure of the skin (for example, thinning) and/or a change in the appearance of the complexion (which becomes dull or paler) and/or the appearance of pigment spots.

Here, four levels (or stages) of skin aging are defined: “absent,” “beginning,” “visible,” and “pronounced.”

Exposure to oxidation factors characterizes the resistance and exposure of the subject's skin, in particular to ultraviolet (UV) radiation and/or pollution (particularly exposure to certain polluting species) and/or smoking, for example.

Skin exposed to oxidative factors is characterized by significant changes in the skin. These include accelerated skin aging, a tendency toward inflammation, and damage to the DNA of skin cells. This exposure to oxidative factors can also promote the appearance of pigment spots and increased skin sensitivity.

In the present invention, two degrees of exposure to oxidation factors are considered: the subject's skin is "exposed" or "protected".

The sebum production parameter makes it possible to characterize the appearance of the subject's skin in relation to the activity of the sebaceous glands.

Three levels are distinguished here regarding sebum production: hypoproduction of sebum, normoproduction of sebum and hyperproduction of sebum.

Skin associated with underproduction of sebum is characterized by dry skin associated, for example, with a feeling of tightness.

Skin associated with an overproduction of sebum is, for example, associated with a shinier middle area of the face (known as the T zone) and skin prone to blackheads and dilated pores.

The use of these three parameters for the skin typology of a subject, with their associated subcategories, leads to the definition of 24 different skin typologies. The 24 possible skin typologies according to the invention are as follows (with the associated parameters):
- AE+: no skin aging; exposed skin, hyperproduction of sebum,
- AE.: absent skin aging; exposed skin, normal production of sebum,
- AE-: absent skin aging; exposed skin, underproduction of sebum,
- AP+: no skin aging; protected skin, hyperproduction of sebum,
- AP.: no skin aging; protected skin, normal production of sebum,
- AP-: no skin aging; protected skin, low sebum production,
- DE+: early skin aging; exposed skin, overproduction of sebum,
- DE.: early skin aging; exposed skin, normal production of sebum,
- DE-: early skin aging; exposed skin, underproduction of sebum,
- DP+: early skin aging; protected skin, hyperproduction of sebum,
- DP: early skin aging; protected skin, normal production of sebum,
- DP-: early skin aging; protected skin, underproduction of sebum,
- VE+: visible skin aging; exposed skin, overproduction of sebum,
- VE.: visible skin aging; exposed skin, normal production of sebum,
- VE-: visible skin aging; exposed skin, underproduction of sebum,
- VP+: visible skin aging; protected skin, hyperproduction of sebum,
- VP.: visible skin aging; protected skin, normal production of sebum,
- VP-: visible skin aging; protected skin, underproduction of sebum,
- PE+: pronounced skin aging; exposed skin, hyperproduction of sebum,
- PE: pronounced skin aging; exposed skin, normal production of sebum,
- PE-: pronounced skin aging; exposed skin, underproduction of sebum,
- PP+: pronounced skin aging; protected skin, hyperproduction of sebum,
- PP.: pronounced skin aging; protected skin, normal production of sebum,
- PP-: pronounced skin aging; protected skin, underproduction of sebum.

In practice, the determination of the subject's skin typology is implemented through facial analysis. Here, as shown in the FIG. 2 , step E2 includes two sub-steps to determine the skin typology of the subject concerned.

During sub-step E21, the processor 2 receives data relating to the subject. More particularly, the processor 2 receives data relating to the condition of the subject's skin and/or the subject's environment and/or the subject's lifestyle and/or a characteristic of the subject (such as the subject's gender, a current pregnancy, the skin phototype, etc.).

In practice, the subject provides this data, for example by answering a questionnaire. This questionnaire includes, for example (and in a non-exhaustive manner), questions on gender, skin color, breastfeeding or current pregnancy, sun exposure habits, daily skin sensations, skin pigmentation and the causes of the presence of pigment spots, the recurring presence of imperfections (spots, dots, blackheads, redness) or the usual reaction of the subject's skin to the application of cosmetic products.

In step E22, the processor 2 processes the data provided by the subject (in step E21) to determine the subject's skin typology. In practice, this data processing is carried out on the basis of a scoring system. The data provided by the subject are associated with scores which then make it possible to determine the corresponding subcategories of the three parameters (skin aging stage parameter, oxidation factor exposure parameter and sebum production parameter). The processor 2 then determines the skin typology concerned on the basis of these subcategories obtained for the three parameters.

By way of illustration, in the present invention, the different subcategories of the skin aging stage parameter are associated with the following value intervals: ]10; 11] for the “absent” level, ]11; 14] for the “beginning” level, ]14; 18] for the “visible” level and ]18; 35] for the “pronounced” level. These value intervals are defined arbitrarily based on the scores of the rating system used for the data provided by the subject. These intervals could therefore of course be defined differently.

When the data is provided by the subject via a questionnaire, the different responses are associated with a predefined score which makes it possible to identify the subcategories of the three parameters defining the skin typology.

For example, to the question “what do wrinkles/fine lines look like?”, the answer “deep and diffuse wrinkles: the skin has a creased appearance” contributes a score of 10 to the skin aging stage parameter, the answer “static wrinkles, present in movement and at rest” contributes a score of 3 to the skin aging stage parameter, the answer “expression lines, when I smile” contributes a score of 2 to the skin aging stage parameter, and the answer “fine lines on the forehead or around the eyes” contributes a score of 1 to the skin aging stage parameter. In contrast, the answer “none of these, but I would like to delay their appearance” does not result in a change in the score associated with the skin aging stage parameter.

Finally, by summing the contributions associated with each of the responses provided by the subject, it is possible to determine the score associated with each parameter (among the skin aging stage parameter, the parameter of exposure to oxidation factors and the sebum production parameter) and therefore to deduce the relevant subcategory of each of these parameters. The subject's skin typology is then identified from the subcategories identified for each of the three parameters according to the classification presented previously.

Finally, at the end of step E2, the processor 2 has the subject's skin typology. This skin typology is, for example, stored in the storage device 4 of the selection device 1 for the rest of the process.

As can be seen on the FIG. 2 , the method also comprises step E4. During this step, the processor 2 determines a skin concern data item of the subject concerned.

In this description, “skin concern data” means a skin problem or a specific skin condition that the subject wishes to reduce or improve through the use of cosmetic products. In other words, the skin concern data is associated with a skin disorder or alteration that the subject wishes to reduce or improve through the use of cosmetic products.

In practice, the skin concern here is a rash, dry skin, skin abnormality or skin imperfection.

By way of illustration, the skin concern data within the meaning of the invention corresponds, for example (and in a non-exhaustive manner) to spots (daily, weekly, cyclical or occasional), blackheads, dilated pores, skin with shiny areas, acne scars, melasma (i.e. skin hyperpigmentation resulting in the appearance of dark spots appearing in areas exposed to the sun), bags, dark circles, a dull complexion, post-inflammatory hyperpigmentation, wrinkles, fine lines, loss of firmness, irritation redness, hypersensitivity redness due to the dilation of micro vessels or due to imperfections, redness due to imperfections, skin dehydration or skin dryness.

In practice, the determination of skin concern data is also implemented through facial analysis. Here, as shown in the FIG. 2 and as was the case for the determination of skin typology, step E4 comprises two sub-steps for determining the skin concern data for the subject concerned.

During sub-step E41, the processor 2 receives data relating to the subject. More particularly, as during step E21 described previously, the processor 2 receives data relating to the condition of the subject's skin and/or the subject's environment and/or the subject's lifestyle and/or a characteristic of the subject (such as the subject's gender, a current pregnancy, the skin phototype, etc.).

In practice, the subject provides their data, for example by answering a questionnaire. This questionnaire is, for example, the one used to determine the subject's skin type. Alternatively, another questionnaire, including additional questions, for example, can be used.

An example of a question to obtain skin concern data is, for example, the following: “What is your biggest concern?”

In step E42, the processor 2 processes the data provided by the subject (in step E21) to determine the subject's skin concern data. In practice, this data processing is also carried out on the basis of a scoring system. The data provided by the subject are associated with scores which then make it possible to identify the subject's skin concern data.

At the end of step E4, the processor 2 therefore has the skin concern data for the subject concerned. This skin concern data is for example stored in the storage device 4 of the selection device 1 for the rest of the process.

Steps E2 and E4 are, for example, implemented simultaneously when performing the selection process. In particular, using the same data to determine the subject's skin typology and the skin concern data allows for rapid and efficient execution of these two steps.

Alternatively, these two steps can be implemented successively.

As shown in the FIG. 2 , the method continues at step E6. This step E6 corresponds to a step of determining an incompatibility parameter associated with the subject.

The incompatibility parameter allows you to list additional elements to take into account when selecting cosmetic products. For example, the processor 2 determines the specific characteristics of the subject to consider when making the selection. For example, the incompatibility parameter lists a current pregnancy, or an allergy of the subject to a particular molecule or a parameter of the subject's skin sensitivity. Skin sensitivity is notably associated with an adverse skin reaction, for example, redness, discomfort, irritation or itching.

These specific characteristics are for example determined on the basis of the data provided by the subject in steps E2 and/or E4.

Alternatively, these specific characteristics may be stored in the storage device 4 of the selection device 1. For example, these specific characteristics may be associated with a user account of the subject.

The incompatibility parameter also lists incompatibilities between cosmetic products. This data is stored, for example, in the storage device 4 of the selection device 1.

This incompatibility parameter therefore forms, in a way, additional data to be taken into account in order to implement the selection and offer the subject cosmetic products which suit them and which are compatible with each other.

The method then continues to step E8 during which the processor 2 lists the available cosmetic products. This step is implemented, for example, by considering a database cataloguing all existing cosmetic products and by identifying, in this database, the available cosmetic products. These are, for example, cosmetic products available in stock or in stores.

The processor 2 then stores, in the storage device 4 of the selection device 1, the references of the available cosmetic products (for example in the form of a list).

The method then continues with step E10. During this step, the processor 2 selects a plurality of cosmetic products suitable for the subject concerned. This selection step is implemented in such a way as to optimize the number of cosmetic products corresponding to the skin typology of the subject concerned and taking into account the skin concern data.

This selection step then aims to offer the subject concerned a selection of cosmetic products balanced in type and use (morning/evening) of cosmetic products while limiting their number. More precisely, this selection step aims to select cosmetic products that optimize the effectiveness of the care routine proposed to the subject and satisfy the data of skin concern and the typology of the skin of the subject concerned.

For example, the process allows for the selection of up to ten products. Preferably, the selection process allows for the selection of between 5 and 8 cosmetic products suitable for the individual.

In practice, to select suitable cosmetic products, processor 2 first considers cosmetic products that can address the determined skin concern data (step E12). A first selection of cosmetic products that satisfy the skin concern data is therefore determined here. For example, if the determined skin concern data relates to sunspots, processor 2 first identifies cosmetic products that can address sunspots.

Then, in a second step (at step E14), the processor 2 considers the skin typology of the subject concerned and makes a second selection of cosmetic products.

In practice, the processor 2 performs this second selection so as not to have two identical types of cosmetic products in the selection that is finally proposed to the subject. For example, the processor 2 does not keep two moisturizers satisfying the skin concern data and the skin typology of the subject. On the contrary, the second selection enriches the selected cosmetic products so as to favor a diversity of the cosmetic products proposed. More particularly, if, following the first selection (at step E12), certain product categories are missing, the second selection (at step E14) “fills in” these missing categories. In other words, the optimization of the cosmetic products is carried out by favoring a diversity of the cosmetic products proposed (corresponding to the skin concern data and the skin typology of the subject). At the end of step E14, the processor 2 then has an intermediate selection of cosmetic products satisfying, as a priority, the skin concern data, then the skin typology of the subject, and optimizing the categories of cosmetic products proposed. This then makes it possible to optimize the effectiveness of the care routine offered to the subject while satisfying the data of skin concern (as a priority) and the skin typology of the subject concerned.

Then, in step E16, the processor 2 verifies that the cosmetic products concerned are compatible with the incompatibility parameter determined in step E6.

If all the cosmetic products in the intermediate selection satisfy this incompatibility parameter, the process continues to step E18.

If it appears (in step E16) that one of the selected products (in the intermediate selection) does not respect the incompatibility parameter, the processor 2 resumes at step E12 so as to replace the incompatible cosmetic product with a replacement cosmetic product adapted to the subject (i.e. corresponding to the skin concern data and/or the skin typology of the subject).

As shown in the FIG. 2 , the selection step E10 then comprises the step E18 in which the processor 2 verifies that all the selected products are available. For this, in practice, the processor 2 compares the intermediate selection of cosmetic products determined with the list of references of the available cosmetic products stored in the storage device 4 of the selection device 1 in step E8.

If one of the cosmetic products is not available, the selection process resumes at step E12 in order to replace the unavailable cosmetic product with a replacement cosmetic product suitable for the subject (i.e. corresponding to the skin concern data and/or the skin typology of the subject).

If all the cosmetic products are available in stock, the processor 2 generates, in step E20, a final selection of cosmetic products suitable for the subject. This final selection of cosmetic products is then transmitted to the subject, for example in the form of an electronic communication.

Thanks to the method according to the invention, the selected cosmetic products are adapted to the subject's skin typology and make it possible to respond to the skin concern that the subject wishes to improve. In addition, the selection of these cosmetic products is carried out in such a way as to optimize the number of cosmetic products and to favor cosmetic products satisfying the skin concern and the skin typology.

Alternatively, the facial analysis of the subject can be implemented by analyzing at least one image of the subject's face. Digital processing of the image of the subject's face then makes it possible to identify, for example, the subject's skin concern data.

Alternatively, in a simplified version of the method, the selection method may be limited to steps E2, E4, E12 and E14 (the determination of the incompatibility parameter and the inventory of available cosmetic products not being implemented in this variant). In this variant, the selection of cosmetic products suitable for the subject is carried out by considering only the data of skin concern and the skin typology of the subject concerned.

There FIG. 3 is a flowchart representing a second example of a method for selecting a plurality of cosmetic products suitable for a subject in accordance with the invention.

The selection method according to this second example is also implemented here by the processor 2. Generally, this selection method according to this second example is implemented by computer.

The selection method according to this second example comprises steps similar to the first example described previously. These similar steps are not described again in detail below.

As shown in the FIG. 3 , the selection method according to this second example begins with a step E62. During this step, the processor 2 determines the skin typology of the subject concerned. This step E62 is similar to step E2 described for the first example of implementation of the selection method. It notably comprises the two sub-steps E621 and E622 respectively similar to the sub-steps E21 and E22 described previously.

The selection method also comprises step E64. During this step, the processor 2 determines a plurality of skin concern data of the subject concerned.

The specificity of this second implementation example is therefore the determination of several skin concern data. Preferably, three skin concern data are determined here.

In practice, each of the skin concern data is determined in a similar manner to the skin concern data entered in the first example of the selection method. Each of the plurality of skin concern data is determined based on facial analysis.

Step E64 is similar to step E4 described for the first example of implementation of the selection method. It notably comprises the two sub-steps E641 and E642 respectively similar to sub-steps E41 and E42 described previously.

In particular, during step E641, the processor 2 receives the data relating to the subject so as to determine the plurality of skin concern data. As in the first example described previously, the data relating to the subject concerned are for example provided in the form of responses to a questionnaire. This may be the same questionnaire as that used to determine the subject's skin typology. Alternatively, additional questions may be used to determine this plurality of skin concern data.

Step E642 makes it possible, in a similar manner to step E42 described previously, to process the data provided by the subject to determine the plurality of skin concern data. This processing of the data provided by the subject can also make it possible to prioritize the subject's skin concern data, by labeling the one that is considered to be the most important to process for the subject (the one that should be processed as a priority). This prioritization is for example also carried out on the basis of the data provided by the subject.

For illustration purposes, it is considered here that three skin concern data are determined in step E64. Of course, the selection method may relate to a different number of skin concern data.

As shown in the FIG. 3 , the selection process continues at step E66. During this step, similarly to step E6 described previously, the processor 2 determines an incompatibility parameter associated with the subject.

Then, in step E68 (similar to step E8 described in the first example of implementation of the selection method), the processor 2 lists the available cosmetic products.

In this second example of the selection method, the method then continues with step E70 of selecting a plurality of cosmetic products suitable for the subject concerned. This selection step is implemented so as to optimize the number of cosmetic products corresponding to the skin typology of the subject concerned and taking into account the plurality of skin concern data (in the present example, taking into account the three skin concern data). More particularly, this selection step aims to select the cosmetic products making it possible to optimize the effectiveness of the care routine proposed to the subject and satisfying the plurality of skin concern data (here the three skin concern data) and the skin typology of the subject concerned.

In practice, the selection of cosmetic products is implemented by taking into account, firstly, the plurality of skin concern data sequentially, then, secondly, the skin typology of the subject. The skin concern data are for example considered sequentially by taking into account the determined prioritization of the skin concern data (by first considering the skin concern data considered to be the most important to be treated by the subject, in decreasing order of importance). In other words, the selection of cosmetic products is implemented by first considering the skin concern data in order of priority (determined for example in step E642), then by considering the skin typology of the subject concerned.

Thus, during step E72A, the processor 2 first considers the cosmetic products that can address a first determined skin concern data item. This first skin concern data item here corresponds to that which has been identified as being the priority concern by the subject concerned. For example, if the first determined skin concern data item relates to sunspots, the processor 2 first identifies the cosmetic products that can remedy the sunspots.

Then, in step E72B, the processor 2 considers a second skin concern data item and determines a second selection of cosmetic products so as to also take this second skin concern data item into account.

In particular, the processor 2 here favors cosmetic products making it possible to jointly process the first skin concern data and the second skin concern data.

At the end of step E72B, processor 2 therefore has the second selection of cosmetic products.

In step E72C, the processor considers a third skin concern data item. As in step E72B, the processor 2 determines a third selection of cosmetic products so as to also take into account this third skin concern data item. Here too, the processor 2 optimizes the selection of cosmetic products by favoring cosmetic products that can process at least two (or even all three if possible) skin concern data items.

Thus, at the end of step E72C, the processor 2 therefore has an intermediate selection of cosmetic products adapted to the skin concern data of the subject concerned.

As shown in the FIG. 3 , the selection method continues in step E74 (similar to step E14 described previously) during which the processor 2 considers the skin typology of the subject concerned and adjusts the selection of the selected cosmetic products (relative to the first, second and third skin concern data considered in steps E72A to E72C). In other words, at the end of step E74, the processor 2 enriches the selection of cosmetic products by also taking into account the skin typology of the subject.

In practice, as described previously, the processor 2 makes this new selection so as not to have two identical types of cosmetic products in the selection that is finally proposed to the subject. On the contrary, the new selection enriches the selected cosmetic products so as to favor a diversity of the cosmetic products proposed. More particularly, if, following the different selections implemented to satisfy the different skin concern data, certain product categories are missing, the new selection (at step E74) “fills” these missing categories. In other words, the optimization of the cosmetic products is carried out by favoring a diversity of the cosmetic products proposed (corresponding to the skin concern data and the skin typology of the subject).

At the end of step E74, the processor 2 then has a new selection of cosmetic products satisfying, as a priority (and by prioritizing them), the various skin concern data, then the skin typology of the subject, and optimizing the categories of cosmetic products proposed. This then makes it possible to optimize the effectiveness of the care routine proposed to the subject while satisfying the skin concern data (as a priority and according to the hierarchy indicated by the subject) and the skin typology of the subject concerned.

Then, in step E76 (similar to step E16 described previously), the processor 2 verifies that the cosmetic products concerned are compatible with the incompatibility parameter determined in step E66.

If all the cosmetic products in the new selection satisfy this incompatibility parameter, the process continues to step E78.

If it appears (in step E76) that one of the selected products (in the new selection obtained at the end of step E74) does not respect the incompatibility parameter, the processor 2 resumes at step E72A so as to replace the incompatible cosmetic product with a replacement cosmetic product adapted to the subject (i.e. corresponding to the different skin concern data and/or the skin typology of the subject).

As shown in the FIG. 3 , the selection step E70 then comprises the step E78 (similar to the step E18 introduced in the first example of the selection method) in which the processor 2 verifies that all the selected products are available. For this, in practice, the processor 2 compares the new selection of cosmetic products determined with the list of references of the available cosmetic products stored in the storage device 4 of the selection device 1 in the step E68.

If one of the cosmetic products is not available, the selection process resumes at step E72A in order to replace the unavailable cosmetic product with a replacement cosmetic product suitable for the subject (i.e. corresponding to the skin concern data and/or the skin typology of the subject).

If all the cosmetic products are available in stock, the processor 2 generates, in step E80 (similar to step E20 described previously), a final selection of cosmetic products suitable for the subject. This final selection of cosmetic products is then transmitted to the subject, for example in the form of an electronic communication.

This second example of the selection method is described for three skin concern data but the invention is not limited to this number three (two or more than three skin concern data can be considered).

Thanks to this second example of the selection method according to the invention, the selected cosmetic products are adapted to the subject's skin typology and make it possible to address several skin concerns that the subject wishes to improve simultaneously. In addition, the selection of these cosmetic products is carried out in such a way as to optimize the number of cosmetic products and to favor cosmetic products satisfying the different skin concerns and skin typology. This then makes it possible to avoid proposing a specific cosmetic product for each skin condition that the subject wishes to improve. The selection of cosmetic products is therefore improved.

Alternatively, this second example may include an additional verification step. This verification step is intended to ensure that all skin concern data have been considered and satisfied (via the selected cosmetic products). If this is not the case, a cosmetic product addressing another skin concern data (generally the skin concern data that has priority over the unaddressed skin concern data) is replaced by a cosmetic product that can satisfy this unaddressed skin concern data. In other words, this verification step ensures that each skin concern data is considered and addressed via at least one selected product.

The present invention relates here to cosmetic products for the face but could of course be applied in the same way to any other part of the body.

Claims (17)

A computer-implemented method of selecting a plurality of suitable cosmetic products for a subject, the method comprising steps of:
- determination (E2; E62) of a skin typology of the subject on the basis of a skin aging stage parameter, a parameter of exposure to oxidation factors and a sebum production parameter,
- determination (E4; E64) of at least one piece of data concerning the subject's skin concerns, and
- selection (E10; E70) of the plurality of cosmetic products according to the skin typology and the skin concern data of the subject, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology of the subject and to the skin concern data of the subject. Method according to claim 1, in which the determination (E4; E64) of the subject's skin concern data is implemented by means of a facial analysis of the subject. The method of claim 2, wherein the facial analysis of the subject comprises steps of:
- provision (E41; E641), by the subject, of data relating to the condition of the subject's skin and/or the subject's environment and/or the subject's lifestyle and/or a characteristic of the subject, and
- processing (E42; E642) of the data provided by the subject in order to determine the skin concern data. Method according to claim 3, wherein the processing of the provided data is implemented by determining a score depending on the data provided by the subject. Method according to any one of claims 2 to 4, in which the facial analysis of the subject comprises a step of analyzing at least one image of the subject's face so as to identify the skin concern data. A method according to any one of claims 1 to 5, wherein the cosmetic product is a moisturizer, a serum, a makeup remover, a cleansing product, a lotion and/or an oil. A method according to any one of claims 1 to 6, wherein the skin concern data is a skin rash, skin dryness, skin abnormality or skin imperfection. Method according to any one of claims 1 to 7, in which a step of determining (E6; E66) an incompatibility parameter associated with the subject is provided, the selection step being implemented taking into account said incompatibility parameter. Method according to claim 8, in which the incompatibility parameter is a pregnancy and/or an allergy to a molecule and/or a sensitivity parameter of the subject's skin. Method according to claim 8 or 9, wherein the incompatibility parameter is an incompatibility parameter between two cosmetic products. Method according to any one of claims 1 to 10, in which a step of inventorying (E8; E68) available cosmetic products is provided,
the selection (E10; E70) of the plurality of cosmetic products being a function of the census of available cosmetic products so that the cosmetic products of the plurality of selected cosmetic products correspond to available cosmetic products. Method according to any one of claims 1 to 11, in which a step of determining (E64) another item of skin concern data of the subject is provided,
the selection (E70) of the plurality of cosmetic products being implemented as a function of the skin typology, the subject's skin concern data and the subject's other skin concern data, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology, the subject's skin concern data and the subject's other skin concern data. Method according to claim 12, in which the selection step (E70) is implemented, initially, as a function of the subject's skin concern data and the subject's other skin concern data, then in a second step as a function of the skin typology. Method according to any one of claims 1 to 13, in which a step of determining (E64) a plurality of data on the subject's skin concerns is provided,
the selection (E70) of the plurality of cosmetic products being implemented as a function of the skin typology and the plurality of skin concern data of the subject, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin typology and the plurality of skin concern data of the subject. Method according to claim 14, in which the selection step (E70) is implemented, initially, as a function of the plurality of skin concern data taken sequentially, then, in a second stage, as a function of the subject's skin typology. Device for selecting a plurality of cosmetic products suitable for a subject, the selection device (1) comprising a processor (2) and a storage device (4), the processor (2) comprising:
- a first module (10) for determining a skin typology of the subject on the basis of a parameter of skin aging stage, a parameter of exposure to oxidation factors and a parameter of sebum production,
- a second module (12) for determining at least one item of skin concern data for the subject, and
- a module (15) for selecting the plurality of cosmetic products according to the skin typology and the skin concern data of the subject, the selection being implemented so as to optimize the number of cosmetic products corresponding to the skin type and the skin concern data of the subject. Computer program comprising instructions executable by a processor (2) and designed to implement a method according to any one of claims 1 to 15 when these instructions are executed by said processor (2).