KR20050046856A - Silica base for lip cosmetic stuff containing water-soluble moisturizing component, preparation thereof and lip cosmetic composition containing same - Google Patents

Abstract

The present invention relates to a silica base for lip cosmetics containing a water-soluble moisturizing component in a hydrophobized porous silica, a method for preparing the same, and a lip cosmetic composition containing the same, wherein the silica base of the present invention is stable in lips without hardness deterioration and pigment separation. It can be blended into cosmetics and water-soluble moisturizing ingredients are gradually released from the lips when applied to provide direct moisturizing power and at the same time, it provides an excellent moisturizing effect by inhibiting evaporation of moisture and moisturizing ingredients by forming a film by oil.

Description

Silica base for lip cosmetics containing a water-soluble moisturizing component, a method of manufacturing the same and a lip cosmetic composition containing the same

The present invention relates to a lip cosmetics, and more particularly, to a silica base for improving the moisturizing properties of the lip cosmetics, a preparation method thereof and a lip cosmetic composition having the same.

The lips are constantly contracted and inflated so that they are the most moving parts of the body. They are always exposed to the outside and are easily stimulated by environmental factors such as UV and air pollutants and dry climate. Unlike the general skin structure, the skin structure of the lips has no sebaceous membrane, and the stratum corneum is formed very thin, so there is absolutely no natural moisturizing factor and amount of water, and the rate of evaporation of water is very fast. Due to these characteristics, the lips are very weak in their defense against external stimuli and are severely damaged. Accordingly, it can be seen that the lip cosmetics should have a better moisturizing effect function than other cosmetics.

Traditional lip cosmetics are generally anhydrous. These consist of hydrophobic waxes, oils, pigments and various additives such as antioxidants, preservatives, fragrances and influence ingredients. These products prevent the loss of moisture by forming a thick film on the lips. While this anhydrous system is effective in preventing water loss, the objective of actively reconstituting the lipids of the lips or incorporating a water soluble moisturizer directly on the lips surface is difficult to achieve.

For this reason, various attempts have been made to give a direct moisturizing effect to the lips, and the conventional techniques for improving the moisturizing properties of the lip cosmetics (particularly lipsticks) are as follows.

First, as a lipstick composition of anhydrous systems, U. S. Patent No. 2,853, 422 describes dispersing water-soluble dyes in propylene glycol, polyethylene glycol and lecioleate, and U. S. Patent No. 5,034, 216 in powder, oil and ethylene / acrylate airborne formulations. Lipstick compositions containing coalescing are described. However, such a lipstick composition is insufficient to give sufficient moisturizing power to the lips.

Second, Japanese Patent Laid-Open No. 61,83110 uses a dispersant such as cholesterol, phytosterol, phospholipid and anionic, nonionic and amphoteric surfactants to emulsify water in wax and oil components to impart a moisturizing effect to the lips. This is described, and US Pat. No. 5,085,856 describes a lipstick composition in which water is stabilized by the use of a suitable emulsifier to solve the storage stability problem of the invention. However, since the lipstick composition containing water is volatilized at the filling temperature (about 70-90 ° C.) during molding, it is difficult to incorporate stabilized water into the final lipstick. In addition, since the hardness of the lipstick is lowered due to the addition of water, the amount of water actually added to the lipstick has been limited. In addition, the use of a water in oil (W / O) type of emulsified base also causes a problem of separation of the pigment when contained in a large amount.

In addition, when a water-soluble moisturizing component is introduced into a lipstick forming a cone, problems such as sweating, color separation, a decrease in appearance gloss, and appearance tearing due to a decrease in mold release property are likely to occur.

Therefore, the main object of the present invention is to provide a new base that can be effectively introduced as a water-soluble moisturizing ingredient in the lip cosmetics without any problems of the prior art as described above.

Another object of the present invention is to provide a method for producing the base.

Another object of the present invention to provide a lip cosmetic composition containing the base described above.

In the present inventor's research to achieve the above object, by encapsulating a water-soluble moisturizing ingredient in hydrophobized porous silica, it is possible to have a kind of solid emulsion, in which the inner phase is an aqueous phase and the outer phase is a hydrophobized powder. As a result, it was introduced into the lip cosmetics based on this, and as a result, it could be stably blended into the lip cosmetics without deterioration of hardness and pigment separation, and when applied, water-soluble moisturizing ingredients were gradually released from the lips to provide direct moisturizing power and form film by oil The present invention was completed by suppressing the evaporation of moisture and moisturizing ingredients to provide an excellent moisturizing effect.

Therefore, according to the present invention, in the base for imparting moisturizing properties to the lip cosmetics, there is provided a silica base for lip cosmetics, wherein the hydrophobic moisturizing component is contained in the hydrophobized porous silica.

In addition, according to the present invention, in the preparation of the silica base for the lip cosmetics, there is provided a method for producing a silica base for lip cosmetics comprising the step of encapsulating a water-soluble moisturizing component in the hydrophobized porous silica. .

According to the present invention, a lip cosmetic composition is provided, wherein the lip cosmetic composition contains 0.1 to 20% by weight of a hydrophobized porous silica base containing a water-soluble moisturizing component.

Hereinafter, the present invention will be described in more detail.

The silica base for lip cosmetics according to the present invention mainly comprises hydrophobized porous silica and a water-soluble moisturizing component contained in the silica. Preferred water-soluble moisturizing ingredients for the silica base of the present invention include polyols such as glycerin, diglycerin, propylene glycol, butylene glycol, pentylene glycol, sorbitol, ziitol, erythritol, raffinose and hyaluronic acid. , At least one selected from water and the like. The content of such water-soluble moisturizing component in the silica base of the present invention is suitably in the range of 1.0 to 95.0% by weight, preferably 50.0 to 93.0% by weight, more preferably 80.0 to 90.0% by weight, based on the total weight of the base. In addition, the content of the hydrophobized silica in the silica base of the present invention is 1.0 to 99.9% by weight, preferably 5.0 to 15.0% by weight, more preferably 7.0 to 10.0% by weight based on the total weight of the base. When the content of the water-soluble moisturizing component in the base of the present invention is less than 1% by weight, the moisturizing property of the lip cosmetics blended therein is insufficient, and when more than 95% by weight, the formulation of the base may be difficult.

The silica base for lip cosmetics of the present invention may be blended with conventional additives in addition to the above main components. Although not particularly limited, examples of such additives include preservatives, sodium chloride, salts such as sodium-PCA, and the like.

The silica base for lip cosmetics of the present invention can be prepared by, for example, a kind of solid emulsifying method of encapsulating a water soluble moisturizing component or an aqueous moisturizing component and an additive in a hydrophobized porous silica.

Preferably, the silica base of the present invention is suitably blended into the lip cosmetic composition in an amount of 0.1 to 20% by weight, preferably 1.0 to 10.0% by weight, more preferably 3.0 to 7.0% by weight, based on the total weight of the composition. When the content of the silica base in the lip cosmetic composition of the present invention is less than 0.1% by weight, the moisturizing effect is insignificant, and when it exceeds 20.0% by weight, the usability is heavy and stiff, which is not preferable.

In addition to the silica base, the lip cosmetic composition of the present invention may contain wax, oil, pigment, powder and the like. Preferred contents of these ingredients are 0-20.0 wt% wax, 50.0-99.9 wt% oil, 0-40.0 wt% pigment and powder.

In the lip cosmetic composition of the present invention, the wax is not particularly limited, and specific examples thereof include polyester, candelillan, ceresin, carnauba wax, paraffin, wooden wax, hard lead, beeswax and microcrystalline lead. Waxes are particularly important for lipsticks in lip cosmetics. When the lip cosmetic composition is a lipstick composition, the wax content is suitably 2.0 to 20.0 wt%, preferably 5.0 to 18.0 wt%, more preferably 10.0 to 15.0 wt%, based on the total weight of the composition.

In the lip cosmetic composition of the present invention, the oil is not particularly limited, and specific examples thereof include castor oil, jojoba oil, squalane, lanolin, lanolin derivatives, oils and synthetic ester oils extracted from animals and plants, and silicone oils. It acts as a factor that greatly affects the dispersibility and usability of the pigment.

In addition, to improve the dispersibility of the pigment, an emulsifier having both hydrophilicity and hydrophobicity is used. As such emulsifiers, it is preferable to use about 3 to 5 low HLB values, such as sorbitan isostearate, sorbitan oleate, sorbitan sesquioleate (Sorbitan) Sesquioleate), sorbitan stearate, polyglyceryl-10 pentahydroxystearate, and the like. Among these, sorbitan isostearate and polyglyceryl-10 pentahydroxystearate are effective, and polyglyceryl-10 pentahydroxystearate is preferable in the formulation containing a water-soluble moisturizing component as in the present invention. The content of the emulsifier in the lip cosmetic composition of the present invention is 0.1 to 5.0% by weight, preferably 1.0 to 3.0% by weight based on the total weight of the composition.

Pigment components that can be used in the lip cosmetic composition of the present invention are largely divided into organic pigments and inorganic pigments. Organic pigments generally have solubility, but these dyes are rarely used in lip cosmetics because they may be stained on the lips. However, since the colors are diverse and bright, pigments made of these insoluble lakes are used. have. In addition, inorganic pigments such as iron oxide are being used, depending on the type and content of these pigments brings a lot of physical properties of lip cosmetics. In the formulation containing the water-soluble moisturizing component as in the present invention, the hydrophilic property of the water-soluble moisturizing component may cause entanglement with the pigment, and therefore, the use of the hydrophobically treated pigment is preferable.

Features and other advantages of the present invention as described above will become more apparent from the following examples. However, the present invention is not limited to the following examples.

Preparation Example 1 Preparation of Hydrophobized Porous Silica Base Containing Water-Soluble Moisturizing Component

The silica base was prepared by encapsulating a water-soluble moisturizing component and an additive in a hydrophobized porous silica base with the composition shown in Table 1 below. The specific manufacturing process is as follows.

Step 1. Add hydrophobized silica to a specially manufactured Henschel mixer and mix.

Step 2. The water-soluble moisturizing ingredient and the additive are uniformly mixed at 80 ° C. with an azimixer.

Step 3. The mixture of Step 2 is formulated by spraying slowly onto the hydrophobized silica of Step 1.

ingredient Example 1 (% by weight) Example 2 (% by weight) Example 3 (% by weight) Example 4 (% by weight) Water-soluble moisturizing ingredient glycerin 60.0 60.0 60.0 60.0 water To 100 To 100 To 100 To 100 Raffinose - - 5.0 - Zyritol - - - 5.0 additive antiseptic 0.05 0.05 0.05 0.05 Sodium chloride 1.0 - - - Sodium PCA - 1.0 1.0 1.0 Hydrophobized Silica 10.0 10.0 10.0 10.0

Preparation Example 2 Preparation of W / O Emulsion Base

W / O emulsified base having the composition shown in Table 2 was prepared through the following steps.

Step 1. Completely mix ingredients 1-3 at 85-90 ° C.

Step 2. The components 4 to 8 are uniformly mixed using an azimixer and maintained at 75 ° C.

Step 3. The solution obtained in step 1 is mixed at 75 ° C. using a homomixer at 3000 rpm.

Step 4. The mixture obtained in Step 2 was emulsified for 10 minutes while slowly entering Step 3, and then cooled to 30 ° C.

ingredient Comparative Example 1 (% by weight) Comparative Example 2 (% by weight) One Polyester 1.0 1.0 2 Sorbitan isostearate 4.0 4.0 3 Hydrogenated Polydecene To 100 To 100 4 glycerin 10.0 60.0 5 Butylene glycol 10.0 10.0 6 water 60.0 10.0 7 antiseptic 0.05 0.05 8 Sodium-PCA 1.0 1.0

Preparation Example 3 Preparation of Lipstick

To prepare a lipstick of the composition of Table 3 through the following steps.

Step 1. Completely dissolve the ingredients 1-9 at 80-90 ° C., add the base (composition 10) and mix for 10 minutes with an azimixer.

Step 2. Composition 11 is completely dispersed in composition 12 using 3-Roll.

Step 3. Add the product of step 2 and ingredient 13 to step 1, completely disperse and degassed using an azimixer, and shape into lipstick.

ingredient Comparative example (wt%) Example (% by weight) 3 4 5 5 6 7 8 9 One Polyester 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 2 Ceresin 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 3 Candelilla 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4 Isostearyl Maleate 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 5 Polyglyceryl-2 Triisostearate 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 6 Polyglyceryl-10 Pentahydroxystearate 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 7 Isostearyl Alcohol 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 8 Triethylhexanoin To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 9 antiseptic 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 10 W / O oil painting base Comparative Example 1 3.0 - - - - - - Comparative Example 2 - - 3.0 - - - - - Silica base Example 1 - - - 3.0 8.0 - - - Example 2 - - - - - 3.0 - - Example 3 - - - - - - 3.0 - Example 4 - - - - - - - 3.0 11 Pigment 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 12 Isostearyl Maleate 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 13 incense 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Comparative Examples 4 and 5: pigment separation and sweating.

Test Example 1 Clinical Trial of Lipstick

100 females in their twenties and thirties were compared to lips prepared before and after using the lipsticks prepared by eight prescriptions, Comparative Examples 3 to 5 and Examples 5 to 9, every day for 2 months. The evaluation was based on the subjective judgment of the students (valuation criteria: 5 points… very good, 4 points… good, 3 points… normal, 2 points… satisfied, 1 point… very dissatisfied). The evaluation results are shown in Table 4 below.

Evaluation item Comparative example Example 3 4 5 5 6 7 8 9 Moisturizing effect 3.0 4.0 4.3 4.5 4.8 4.6 4.7 4.5 Lip Roughness Improvement 3.2 4.3 4.2 4.3 4.7 4.6 4.5 4.5 Application 3.6 4.3 4.0 3.8 3.4 4.2 4.3 4.4 Adhesion 3.5 3.2 4.0 4.5 4.7 4.4 4.6 4.4 Persistence 3.5 3.3 4.0 4.3 4.8 4.5 4.5 4.5

As a result of the clinical trials, it can be seen that the satisfaction of the subjects with respect to the examples was higher than that of the comparative examples as a whole. Comparative Example 3 is a prescription containing no water-soluble moisturizing ingredient at all, Comparative Examples 4 and 5 are prescriptions in which a water-soluble moisturizing ingredient is introduced through a W / O emulsifying base, and Examples 5 to 9 are hydrophobized by water-soluble moisturizing ingredient. It is a prescription introduced by encapsulating in porous silica, and it can be seen that adding water-soluble moisturizing ingredient to lipstick is more effective for moisturizing effect and improving lip roughness than no addition. It can be seen that the encapsulation in the hydrophobized porous silica is effective in improving the moisturizing effect or the roughness of the lips compared to the introduction through the hydrophobized porous silica. Looking at the results of Examples 5 to 9 there is almost no difference in the moisturizing effect or lip roughness items, but only differences in usability items such as applicability, adhesion, persistence.

Test Example 2 Moisturizing Test of Lipstick

Moisturizing effect was measured using a skin moisture meter (Corneometer CM820PC: Courage + Khazaka, Germany) to give objectivity to the subjective clinical trial results. Corneometer is the most widely used method of measuring skin moisture, and it is a method of measuring high frequency conductance of skin. The moisture of the skin is proportional to the capacitance of the skin. While the amount of water cannot be absolutely determined, a comparison of the relative amount of water before and after the use of each lipstick is possible. The test results are shown in Table 5.

location Comparative example Example 3 4 5 5 6 7 8 9 Before the test Upper lip 52 52 50 51 54 52 52 50 Lower lip 53 55 54 52 55 51 52 53 1 month later Upper lip 63 75 75 80 82 87 84 82 Lower lip 64 78 77 77 85 84 86 86 2 months later Upper lip 78 90 95 100 110 105 103 105 Lower lip 76 96 99 101 102 108 110 98

Corneometer test results, as in the clinical trials, it was confirmed that the Example has an excellent moisturizing effect compared to the comparative example.

As described above, the present invention encapsulates a water-soluble moisturizing component that is incompatible with the general lip cosmetic composition to the hydrophobized porous silica so that it can be stably blended into the lip cosmetic without deterioration of hardness and pigmentation, and water-soluble upon application. The moisturizing ingredient is slowly released from the lips to provide direct moisturizing power and at the same time, it provides an excellent moisturizing effect by inhibiting evaporation of moisture and moisturizing ingredients by forming a film by oil.

Claims (5)

A base for imparting moisture to a lip cosmetic, wherein the hydrophobized porous silica contains a water-soluble moisturizing component. The method of claim 1, wherein the water-soluble moisturizing component is one selected from the group consisting of glycerin, diglycerin, propylene glycol, butylene glycol, pentylene glycol, sorbitol, zithritol and erythritol, raffinose, hyaluronic acid and water or Silica base for lip cosmetics, characterized in that a mixture of two or more kinds. The silica base for lip cosmetics according to claim 1, comprising 1.0 to 95.0% by weight of the water-soluble moisturizing component and 1.0 to 99.9% by weight of the hydrophobized porous silica. In the preparation of a silica base for lip cosmetics, the method of producing a silica base for lip cosmetics comprising the step of encapsulating a water-soluble moisturizing component in the hydrophobized porous silica. In the lip cosmetic composition, the lip cosmetic composition characterized in that the hydrophobized porous silica base containing a water-soluble moisturizing component is contained in an amount of 0.1 to 20% by weight based on the total weight of the composition.