JP2010059115A - Skin care method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To bring about a high moisturizing effect and a curative effect for skin while providing a skin state which is non-sticky and excellent in makeup applicability in skin care. <P>SOLUTION: A first aqueous cosmetic containing 9-12 mass% of glycerin is applied to skin, and thereafter a second aqueous cosmetic containing 1-4 mass% of glycerin is applied to the skin. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a skin care method and a skin care cosmetic kit using two cosmetics having different glycerin contents.

  In order to maintain a smooth, moist, and transparent skin, it is important that the skin surface layer such as the keratin and epidermis function normally. There are moisture, natural moisturizing factor (NMF), and lipids on the skin surface, and the balance of these three, that is, the moisture balance, is important for skin function homeostasis. The stratum corneum normally retains about 20% of water, but when the moisture balance is lost due to a decrease in MNF, intercellular lipids, etc. due to various external and internal factors, the function of the skin surface layer decreases. , The moisture retention of the stratum corneum is reduced, the skin is dried, the texture is disturbed, and the skin is rough. For such skin surface function deterioration, skin care is performed using skin care cosmetics such as skin lotions and emulsions to replenish moisture, moisturizing ingredients, oils, etc., to adjust the moisture balance, and to improve the skin surface. Can be kept healthy.

  Usually, skin care is done in two stages by combining a lotion that replenishes moisture and moisturizing ingredients to make the skin fresh and moisturized, and an emulsion that replenishes oils along with moisture and moisturizing ingredients to enhance the skin's moisturizing and flexible functions. At that time, in order to obtain a higher moisturizing effect, a combination of a moisturizing agent in both the lotion and the emulsion is used.

Glycerin has a high moisturizing effect and has been widely used for many years as a moisturizing agent in skin external preparations such as cosmetics. For example, Non-Patent Document 1 describes that the moisture retention function is increased by applying a 40% glycerin-containing moisturizing cream. Furthermore, glycerin has an excellent skin improvement effect in addition to a moisturizing effect. For example, Patent Document 1 describes a water-in-oil emulsified cosmetic for preventing rough skin containing 3 to 25% glycerin. Yes. However, glycerin has a characteristic of stickiness due to a characteristic characteristic of a polyol-based compound, and when the blending amount is increased, the feeling of use becomes worse. In addition, in order to enhance the moisturizing effect and skin improvement effect, if lotion and milky lotion containing a large amount of glycerin is used, the skin becomes sticky after skin care, and the foundation will thicken after makeup. There was a problem that makeup became worse, such as unevenness. On the other hand, reducing the total amount of glycerin added to the lotion and emulsion improves the feeling of stickiness and the thickness of the foundation, but the moisturizing effect is not sufficient, especially for dry skin. Can not bring skin care effect.
JP 2002-356416 A Effectiveness of cosmetics Advances in evaluation technology and future prospects (Nanzan-do), pages 44-45

  In view of the circumstances as described above, an object of the present invention is to provide a skin care method and a skin care cosmetic kit that can provide a high moisturizing effect and a skin improvement effect, and can provide a skin state that is not sticky and has a good makeup. To do.

  The present inventor, for example, blends the first cosmetic and the second cosmetic in a two-stage skin care using the first cosmetic such as a skin lotion and the second cosmetic such as an emulsion sequentially. If the total amount of glycerin is the same, the same amount of stratum corneum moisture can be brought about. In that case, a large amount of glycerin is blended in the first cosmetic, and the amount of glycerin in the second cosmetic Can reduce the stickiness after skin care while maintaining the total amount of glycerin sufficient to bring about moisturizing and skin improvement effects, and make the foundation thin and uniform on the skin after skin care. As a result, the present invention was completed.

  The skin care cosmetic kit of the present invention comprises a first aqueous cosmetic containing 9 to 12% by mass of glycerin and a second aqueous cosmetic containing 1 to 4% by mass of glycerin. To do. The skin care cosmetic kit of the present invention preferably further includes instructions for applying the first cosmetic to the skin and then applying the second cosmetic to the skin.

  In the skin care method of the present invention, the first aqueous cosmetic containing 9 to 12% by mass of glycerin is applied to the skin, and then the second aqueous cosmetic containing 1 to 4% by mass of glycerin is applied. It is characterized by being applied to the skin.

  By sequentially applying such two cosmetics having different glycerin blending amounts, a high stratum corneum moisture content can be brought about, and the skin state without stickiness and good makeup can be obtained.

  Preferably, the total of the glycerin content of the first cosmetic and the glycerin content of the second cosmetic is 12 to 16% by mass. A more effective moisturizing and skin improving effect can be obtained by the total amount of glycerin within such a range.

  Moreover, it is preferable that the oil content of a 1st cosmetics is 3 mass% or less, and the oil content of a 2nd cosmetics is 5-20 mass%. In skin care, the first cosmetic with a relatively low oil content is usually replenished with moisture and moisturizing ingredients to give the skin freshness and moisture, and then the second cosmetic with a relatively high oil content is used for moisture and moisturization. Oil can be replenished together with the ingredients to enhance the skin moisturizing and softening function and bring about a good skin condition.

  More preferably, the ratio of the solid oil in the oil of the second cosmetic is 1 to 30%. When there is too much solid oil content in a 2nd cosmetics, it will become difficult to adjust to skin and subsequent makeup paste will worsen.

  The makeup method of the present invention is characterized in that a foundation is applied after the skin care method of the present invention is applied. By applying the foundation after performing skin care by the method of the present invention, the foundation can be applied thinly and uniformly, and a makeup with a good finish with good makeup can be performed.

  In the skin care kit and skin care method of the present invention, 9 to 12% by mass of glycerin is blended in the first aqueous cosmetic, and 1 to 4% by mass of glycerin is blended in the second aqueous cosmetic, and these are sequentially added to the skin. By applying it to the skin, the skin can be moisturized and moisturized with flexibility, and it can be used to care for the skin before going to bed. It can be applied even when makeup is performed thereafter, and can provide a skin improvement effect more easily and effectively.

  The skin care cosmetic kit of the present invention includes a first aqueous cosmetic containing 9 to 12% by mass of glycerin and a second aqueous cosmetic containing 1 to 4% by mass of glycerin.

  In the present invention, the water-based cosmetic is a hydrophilic cosmetic that can be uniformly mixed with water, and means that a blended component is dissolved and / or dispersed in water. For example, lotions, cosmetics, milky cosmetics, creamy cosmetics, gel cosmetics, etc. in which the compounding ingredients are dissolved or dispersed in water can be mentioned. The emulsified type is oil-in-water type (O / W type) ) Cosmetics.

  If the 1st water-based cosmetics used in this invention contain 9-12 mass% glycerol, it mix | blends the arbitrary components mix | blended with normal skin care cosmetics, and prepares it by a normal method. be able to. Examples of such cosmetics include skin lotions, cosmetic liquids, milky lotions, creams, and the like.

  It is desirable that the first water-based cosmetic is replenished with moisture and moisturizing ingredients to give freshness and moisture to the skin. The oil content of the first cosmetic is preferably 3% by mass or less, for example, 0.01 to 3% by mass, and more preferably 0.01 to 1% by mass. Further, from the viewpoint of usability and the like, the ratio of the solid oil in the oil of the first cosmetic is preferably less than 1%, more preferably 0.5% or less, and most preferably no solid oil is contained. . In the present invention, the solid oil component means a solid oily component at normal temperature (25 ° C.).

  As long as the object of the present invention can be achieved, the first aqueous cosmetic can be prepared by blending any component that is usually blended in a skin care cosmetic. For example, when it is lotion, for example, alcohols, neutralizers, moisturizers, thickeners or water-soluble polymers such as water-soluble polymers, ester oils, vegetable oils, liquid oils such as silicone oils, flavors, Oily components such as vitamins, surfactants, buffers, preservatives, antioxidants, coloring materials, fragrances and the like can be prepared by dissolving or dispersing them in purified water in sequence.

  If the 2nd water-based cosmetics used in this invention contain 1-4 mass% glycerol, it mix | blends the arbitrary components mix | blended with normal skin care cosmetics, and prepares by a normal method. be able to. Examples of such cosmetics include lotions, cosmetic liquids, milky lotions, creams, and the like.

  It is desirable that the second water-based cosmetic is to replenish oil together with moisture and a moisturizing component to enhance the moisturizing and softening function of the skin. The oil content of the second cosmetic is preferably 5 to 20% by mass, more preferably 5 to 10% by mass. Moreover, it is preferable that the ratio of the solid oil component in the oil component of a 2nd cosmetics is 1 to 30%, More preferably, it is 1 to 20%, More preferably, it is 1 to 10%. When there is too much solid oil content in a 2nd cosmetics, it will become difficult to adjust to skin and subsequent makeup paste will worsen.

  As long as the objective of this invention can be achieved, the 2nd aqueous | water-based cosmetics can mix | blend and prepare the arbitrary components normally mix | blended with skin care cosmetics. For example, in the case of an emulsion, for example, alcohols, moisturizers, neutralizers, thickeners or aqueous components such as water-soluble polymers, liquid oils such as ester oils, vegetable oils, silicone oils, hydrocarbons Oil, higher alcohol, solid oil such as wax, semi-solid oil such as petroleum jelly, surfactant, buffer, preservative, antioxidant, colorant, fragrance, etc. are added, and the oil phase is stirred in the water phase. While adding and emulsifying.

  From the viewpoints of moisturizing and skin improvement effects, the total glycerin content of the first cosmetic and the second cosmetic is preferably 12 to 16% by mass, more preferably 12 to 14% by mass. According to the skin care method of the present invention, a large amount of glycerin can be blended without causing inconvenience such as stickiness and thickening of the foundation, and a sufficient and high moisture retention and skin improvement effect can be brought about.

  The first and second aqueous cosmetics used in the present invention may contain any other moisturizing agent in addition to glycerin as long as the object of the present invention can be achieved, but such moisturizing agent is not limited. , For example, polyethylene glycol, propylene glycol, 1,3-butylene glycol, hexylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, lactic acid Examples thereof include sodium, bile salt, dl-pyrrolidone carboxylate, short chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, yarrow extract, merirot extract, tranexamic acid and the like.

  In addition, the first and second cosmetics of the present invention are not limited, but the following optional components usually used in cosmetics can be appropriately selected and blended as necessary.

  Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern castor oil, castor oil, linseed oil , Safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin and the like.

  Examples of the solid fat include cacao butter, palm oil, horse fat, hydrogenated palm oil, palm oil, beef tallow, sheep fat, hydrogenated beef tallow, palm kernel oil, pork fat, beef bone fat, owl kernel oil, hydrogenated oil, cattle Leg fats, moles, hydrogenated castor oil and the like.

  Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nuka wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugar cane wax, lanolin fatty acid isopropyl, hexyl laurate, and reduced lanolin. , Jojoballow, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, and the like.

  Examples of the hydrocarbon oil include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, polyethylene wax, and Fischer-Tropsch wax.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, toluic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and the like. Is mentioned.

  Examples of higher alcohols include linear alcohols (eg, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol); branched chain alcohols (eg, monostearyl glycerine ether (batyl alcohol) ), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, octyldodecanol and the like.

  Synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, myristyl lactate Lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, monoisostearic acid N-alkyl glycol, dicapric acid neopentyl glycol, apple Acid diisostearyl, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, triisostearic acid trimethylo Propane, tetra-2-ethylhexanoate pentaerythritol, glycerol tri-2-ethylhexanoate, glycerol trioctanoate, glycerol triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmi Tate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2 -Octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate Le, 2-ethylhexyl succinate, triethyl citrate, polyoxyethylene-polyoxypropylene random polymer methyl ether.

  Examples of the silicone oil include linear polysiloxanes (for example, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); cyclic polysiloxanes (for example, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexyl). And silicone resins that form a three-dimensional network structure, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.) It is done.

  Antioxidants such as butylhydroxytoluene, tocopherol, and phytin; antibacterial agents such as benzoic acid, salicylic acid, sorbic acid, paraoxybenzoic acid alkyl ester, hexachlorophene; acyl sarcosine acid (eg, lauroyl sarcosine sodium), glutathione, citric acid, apple Organic acids such as acid, tartaric acid and lactic acid; vitamin B and its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 and its derivatives, vitamin B12 such as vitamin B12, vitamin B15 and its derivatives Vitamin C such as ascorbic acid, ascorbic acid sulfate (salt), ascorbic acid phosphate (salt), ascorbic acid dipalmitate, α-tocopherol, β-tocopherol, δ-tocopherol Vitamins such as vitamin E acetate, vitamin E, vitamin D, vitamin H, pantothenic acid, pantethine; nicotinamide, benzyl nicotinate, γ-oryzanol, allantoin, glycyrrhizic acid (salt), glycyrrhetinic acid and its Derivatives, hinokitiol, bisabolol, eucarptone, thymol, inositol, psychosaponin, carrot saponin, hechimasaponin, muclodisaponin, and other saponins, pantothenyl ethyl ether, ethinyl estradiol, cephalanthin, placenta extract , Kohone, orange, sage, yarrow, mallow, assembly, thyme, spruce, spruce, birch, horsetail, loofah, maronier, yukinoshita, arnica, lily, mugwort, sha Peony, Aloe, Gardenia, Sawara, Hawthorn extract, Hypericum perforatum extract, Iris in extract, Acacia extract, Ginkgo biloba extract, Eustoma japonica extract, Fennel extract, Oolong tea extract, Water lily extract, Ages extract, Enmiso extract, Plant extracts, pigments, such as ougon extract, persimmon extract, licorice extract, licorice extract, gardenia extract, black tea extract, sesame extract, tormentilla extract, rose extract, loofah extract, peppermint extract, rosemary extract, royal jelly extract, Sorbitan monolaurate, sorbitan monopalmitate, sorbitan sesquioleate, sorbitan trioleate, polyoxyethylene sorbitan monolaurate, monos Nonionics such as polyoxetylene sorbitan acrylate, polyethylene glycol monooleate, polyoxyethylene alkyl ether, polyglycol diether, lauroyl diethanol amide, fatty acid isopropanol amide, maltitol hydroxy fatty acid ether, alkylated polysaccharide, alkyl glucoside, sugar ester, etc. Surfactants, cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide, sodium palmitate, sodium laurate, sodium laurate, potassium lauryl sulfate, alkylethanol triethanolamine ether, funnel oil , Linear dodecyl benzene sulfate, polyoxyethylene hydrogenated castor oil maleic acid, acylmethyl taurine, etc. On-active surfactants, amphoteric surfactants, neutralizing agents such as potassium hydroxide and triethanolamine, antioxidants such as δ-tocopherol and butylhydroxytoluene, preservatives such as phenoxyethanol and paraben, paraaminobenzoic acid (hereinafter hereafter) (Abbreviated as PABA), UV absorbers such as PABA monoglycerin ester, UV scattering agents such as titanium oxide, zinc oxide, iron oxide, cerium oxide, hydroquinone glycoside, tranexamic acid or its derivatives, resorcin, 4-n-butyl Examples thereof include alkyl resorcinols such as resorcinol, and resorcins and derivatives thereof such as salts thereof, whitening agents such as glutathione, kojic acid, ellagic acid, and crude drugs.

  In the makeup method of the present invention, the foundation is applied after skin care is applied by the above method. The foundation may be applied directly after the application of the second aqueous cosmetic, but the foundation may be applied after further application of other cosmetics such as a makeup base. Also, the dosage form of the foundation is not particularly limited, and includes arbitrary forms such as a powder solid foundation, an emulsified foundation, and an oily foundation.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to the following Example.

1. Preparation of cosmetics In the prescription shown in Table 1, lotions and emulsions were prepared according to the following method by changing the blending amount of glycerin between 0 and 12% by mass. In the following tests, the lotion so prepared was used as the first aqueous cosmetic and the emulsion was used as the second aqueous cosmetic.

(1) Preparation of skin lotion Add moisturizer to purified water and dissolve at room temperature. Add oil, surfactant, and paraben to ethanol and dissolve at room temperature. The alcohol phase is added to the aforementioned aqueous phase and mixed.

(2) Preparation of emulsion After mixing and dissolving alcohol, humectant, and potassium hydroxide in some purified water, heating to 70 ° C and mixing the active agent / oil / paraben dissolved at 70 ° C. In addition, emulsify. Thereafter, a dispersion of carboxybicil polymer in purified water is added, mixed by mechanical force, and cooled to 30 ° C.

2. Examination of the amount of glycerin blended in the first cosmetic and the second cosmetic For the combination of glycerin blends in Test Examples 1 to 6 shown in Table 1, the amount of glycerin remaining on the skin surface to the horny layer after application is determined. evaluated.

  The amount of glycerin remaining on the skin was measured by an infrared absorption spectrum (IR) method using a detachable bare fiber ATR probe (Systems Engineering Co., Ltd.). By measuring an infrared absorption spectrum at a depth of about 5 μm from the contact interface of the probe, a change in the amount of substance remaining in the stratum corneum from the skin surface to a depth of 5 μm can be obtained as a peak intensity difference. .

After double-washing with make-up remover and face wash, IR measurements were taken (before application). In each test example combination, using cotton, 2 ml of the first cosmetic (skin lotion) was applied to the face over 1 minute, and then 1.5 ml of the second cosmetic (milk) was applied over 1 minute. It was applied onto the substrate and allowed to stand for 120 minutes, and then IR measurement was performed again (120 minutes after application). Further, after washing the face with hot water, IR measurement was performed (after washing the face again). (N = 9)
The peak intensity difference was determined by subtracting the peak intensity before application from the peak intensity 120 minutes after application and after rewashing. The results are shown in FIGS. 1 and 2, respectively. The difference in peak intensity is an indicator of the remaining amount of glycerin remaining in the stratum corneum from the skin surface to a depth of 5 μm by application. The value for 120 minutes after application (FIG. 1) indicates the total amount of glycerin taken into the stratum corneum and glycerin remaining on the skin surface. On the other hand, the value after re-washing (FIG. 2) is considered to indicate the amount of glycerin remaining in the stratum corneum after glycerin present on the skin surface is removed.

  As shown in FIG. 1, even if the total amount of glycerin in the first cosmetic and the second cosmetic is the same (Test Examples 3 to 6), the higher the glycerin content in the second cosmetic, the more applicable The amount of glycerin remaining afterwards was large. A large amount of glycerin remaining on the skin surface is thought to cause stickiness and subsequent thickening of the foundation.

  As shown in FIG. 2, when the face was washed again thereafter, glycerin remaining on the skin surface was removed, and in Test Examples 3 to 6 in which the total amount of glycerin was the same (13%), the amount was almost the same. It was shown that glycerin remains in the stratum corneum. It is considered that glycerin is taken into the stratum corneum depending on the total amount of glycerin, and can provide a moisturizing effect and a skin improving effect.

  Further, although not shown in the data, the amount of water present from the skin surface to a depth of 5 μm was measured as a peak intensity difference by the same method as the measurement of glycerin by the IR measurement method. In Test Examples 3 to 6, after the face washes again, an increase in the moisture content of the skin was observed compared to before application.

  On the other hand, in Test Example 1 in which glycerin was not blended at all and Test Example 2 in which the total blending amount of glycerin was 4%, glycerin did not remain at all after the face washes again, and the water content was the same as before application or rather decreased. did.

3. Effect of glycerin blending amount on makeup paste In the same manner as described above, for Test Examples 2, 3, 4 and 6, makeup paste when applying foundation after application was evaluated by image analysis.

  After double face washing using make-up remover and face wash, 2 ml of the first cosmetic (skin lotion) was applied to the face using cotton for 1 minute in the combination of each test example, and then the second makeup The coating material (milky lotion) 1.5ml was applied on it over 1 minute, and the powdering foundation was further applied thereon. The cheek portion was subjected to image analysis using Skin Vision II (Shiseido Co., Ltd.) (100 times polarized VMS (Visual Monitoring System)), and the adhesion amount, unevenness and roughness of the foundation were measured.

FIG. 3 shows a polarized image photograph of the cheek. The analysis results are shown in Table 2 below:

  In Test Examples 3, 4 and 6, the total amount of glycerin is the same, but the amount of glycerin in the first cosmetic is large and the amount of glycerin in the second cosmetic is small. In Test Examples 3 and 4, in which the amount of glycerin in the first cosmetic is small and the amount of glycerin in the second cosmetic is large, while the amount is small and smooth and uniform, the adhesion amount of the foundation In addition, it was rough and uneven.

  From the above results, maintaining the total amount of glycerin sufficient to bring about moisturizing and skin improvement effects by adding more glycerin to the first cosmetic and reducing the amount of glycerin in the second cosmetic On the other hand, it was shown that the foundation can be applied thinly and uniformly to the skin after skin care, and a skin condition with good makeup can be provided.

4). In each combination of study in Test Example 1-6 long-term use effect, after skincare with 1 consecutive months in the morning and evening, it was evaluated feeling, the stratum corneum water content and the like.

Each time, 2 ml of lotion was applied with cotton, and then 1.5 ml of emulsion was applied with cotton. After applying for 1 month, questionnaires about feeling of use (no stickiness and freshness after applying lotion, no stickiness after applying emulsion) and foundation glue (thickness and uniformity with stickiness) based on the following evaluation criteria (N = 8):

Number of people who feel about each item: 6 or more: ◎
4 to 5 people: ○
2-3 people: △
0 to 1 person: ×

Further, the stratum corneum water content of the cheek was measured using a moisture meter Corneometer (registered trademark) CM825 (CK company) before continuous use and after one month of continuous use, and evaluated according to the following criteria (N = 8):

Significant increase in stratum corneum moisture after continuous use compared to before continuous use: ○
No change: △
Significant decrease: ×

The results are shown in Table 3:

  In Test Examples 5 and 6 in which the amount of glycerin in the first cosmetic is 9 to 12% by mass and the amount of glycerin in the second cosmetic is 1 to 4% by mass, the feeling after use for one month In addition, the foundation paste was good, and the moisture content of the stratum corneum increased significantly, and a high moisturizing effect was also observed. On the other hand, in Test Examples 3 and 4 in which the amount of glycerin in the second cosmetic was larger than the amount of glycerin in the first cosmetic, the stratum corneum moisture content increased significantly, but the second cosmetic application The later usability was poor and the foundation paste was poor. In Test Example 1 in which glycerin was not blended and Test Example 2 in which the total amount of glycerin was small, the stratum corneum moisture content was not increased by continuous use, and a moisturizing effect could not be achieved at all.

  Below, the other formulation example of the cosmetics kit of this invention is shown. All compounding amounts are expressed in mass% with respect to the total amount of the preparation.

Formulation Example 1:
First cosmetic (lotion)
Compounding ingredients Compounding amount (% by mass)
Purified water, remaining ethanol 5
Glycerin 10
1,3-butylene glycol 5
Polyoxyethylene polyoxypropylene decyl tetradecyl ether 0.2
Sodium hexametaphosphate 0.03
Trimethylglycine 1
α-Tocopherol 2-L-ascorbic acid phosphate diester potassium 0.1
EDTA3 sodium 0.1
Carboxyvinyl polymer 0.05
Potassium hydroxide 0.02
Phenoxyethanol 0.05
Perfume

Second cosmetic (milky lotion)
Compounding ingredients Compounding amount (% by mass)
Purified water Remaining glycerin 2
1,3-butylene glycol 7
Erythritol 2
Dimethylpolysiloxane 3
Behenyl alcohol 1
Batyl alcohol 0.5
Hardened oil 2
Squalane 6
Tetra-2-ethylhexanoic acid pentaerythlit 2
Polyoxyethylene glyceryl isostearate 1
Polyoxyethylene glyceryl monostearate 1
Potassium hydroxide appropriate amount Sodium hexametaphosphate 0.05
Phenoxyethanol 0.03
Carboxyvinyl polymer 0.1

Formulation Example 2:
First cosmetic (lotion)
Compounding ingredients Compounding amount (% by mass)
Purified water Remaining glycerin 11
Dipropylene glycol 12
Ethanol 8
POE methyl glucoside 3
POE (24) POP (13) decyl tetradecyl ether 0.5
Citric acid 0.02
Sodium citrate 0.08
Hydroxypropyl-β-cyclodextrin 0.5
Sodium hyaluronate 0.01
EDTA3 sodium 0.01
Hydroxyethyl cellulose 0.1
Paraben 0.1
Perfume

Second cosmetic (milky lotion)
Compounding ingredients Compounding amount (% by mass)
Purified water Remaining glycerin 4
1,3-butylene glycol 7
1,2-pentanediol 1
Xylit 3
Polyethylene glycol 20000 2
Vaseline 5
Behenyl alcohol 0.5
Batyl alcohol 0.5
Hardened oil 2
Jojoba oil 2
Squalane 5
Isostearic acid 0.5
Tetra-2-ethylhexanoic acid pentaerythlit 2
Polyoxyethylene hydrogenated castor oil 0.5
Lauryldimethylaminoacetic acid betaine 0.4
Potassium hydroxide appropriate amount Sodium pyrosulfite 0.01
Sodium hexametaphosphate 0.05
Dipotassium glycyrrhizinate 0.05
Trimethylglycine 3
Arbutin 3
Tocopherol acetate 0.1
Clara extract 0.1
Carboxyvinyl polymer 0.2
Phenoxyethanol 0.03

  By applying the cosmetic kit of the above-mentioned prescription example, it can provide an excellent moisturizing effect and skin improvement effect, and can evenly and thin the foundation on it, resulting in a skin condition with good makeup. It was.

The graph which shows the glycerin peak intensity difference on the skin 120 minutes after application in the combination of each glycerin compounding quantity. The graph which shows the glycerin peak intensity | strength difference on the skin after a face-wash in the combination of each glycerin compounding quantity. Skin VISION II II 100 times polarized image of the cheek after applying the foundation in each glycerin combination amount.

Claims (10)

A skin care cosmetic kit comprising a first aqueous cosmetic containing 9 to 12% by mass of glycerin and a second aqueous cosmetic containing 1 to 4% by mass of glycerin. The cosmetic kit according to claim 1, wherein the total of the glycerin content of the first cosmetic and the glycerin content of the second cosmetic is 12 to 16% by mass. The cosmetic kit according to claim 1 or 2, wherein the oil content of the first cosmetic is 3% by mass or less, and the oil content of the second cosmetic is 5 to 20% by mass. The cosmetic kit according to claim 3, wherein the ratio of the solid oil in the oil of the second cosmetic is 1 to 30%. The cosmetic kit according to any one of claims 1 to 4, further comprising instructions for applying the first cosmetic material to the skin and then applying the second cosmetic material to the skin. A skin care method in which a first aqueous cosmetic containing 9 to 12% by mass of glycerin is applied to the skin, and then a second aqueous cosmetic containing 1 to 4% by mass of glycerin is applied to the skin. The skin care method according to claim 6, wherein the total of the glycerin content of the first cosmetic and the glycerin content of the second cosmetic is 12 to 16% by mass. The skin care method according to claim 6 or 7, wherein the oil content of the first cosmetic is 3% by mass or less, and the oil content of the second cosmetic is 5 to 20% by mass. The skin care method according to claim 8, wherein the ratio of the solid oil in the oil of the second cosmetic is 1 to 30%. A makeup method in which a foundation is applied after applying the skin care method according to any one of claims 6 to 9.