KR100879134B1 - Oil cosmetic composition containing water-soluble ingregdients - Google Patents

Abstract

The present invention relates to an oil type cosmetic composition containing a water-soluble component, and more particularly, to an oil type in which the oil is a continuous phase by appropriate amounts and combination ratios of (a) silica and its derivatives, (b) silicone elastomers, and (c) water-soluble components. The cosmetic composition is excellent in long-term storage stability, excellent skin moisturizing and catchment when applied to the skin, not only excellent in the use, but also contains no emulsifier and provides an oily cosmetic composition with little skin irritation.

Silica, Water Soluble, Moisturizing, Oil, Cosmetic

Description

OIL COSMETIC COMPOSITION CONTAINING WATER-SOLUBLE INGREGDIENTS}

The present invention relates to an oil-based cosmetic composition containing a water-soluble component, and more particularly, to an oil-type cosmetic composition in which oils are continuous by appropriate amounts and combination ratios of silica and its derivatives, silicone elastomers and water-soluble components, and have excellent long-term storage stability, and skin It is an oil-based cosmetic composition that has excellent skin moisturizing and catching property when applied to the skin, and has excellent feeling of use and contains no emulsifier and thus has little skin irritation.

In the human body, the skin acts as a protective film that protects the living body from the external environment. It prevents the loss of biological components, such as water and electrolytes, and prevents harmful substances from entering the body. . Such skin is largely divided into epidermal layer, dermal layer and subcutaneous fat layer. The epidermal layer is composed of keratinocytes and melanocytes. Since the outermost keratinocyte layers of skin are in direct contact with the external environment, they require strong resistance to physical, chemical, or permeation of substances, and prevent the loss of moisture from the body to the outside. At the same time, it should maintain flexibility by retaining adequate moisture on its own.

In general, the moisture content of the skin is about 70% in the dermal layer, but decreases toward the epidermal layer, which is about 10 to 30% in the keratinocyte layer. The water supplied from the dermal layer is mainly moved up the stratum corneum by passive diffusion and finally discharged to the outside. This is called Trans Epidermal Water Loss (TEWL), and it is known that it is the sebaceous component and the epidermal lipid which are the lipid membrane components of the keratinocyte layer to maintain the appropriate level of transdermal moisture loss. In addition, the keratinocyte layer is known to play an important role in moisturizing the skin due to the presence of a substance having a hydrophilic water retention ability called a natural moisturizing factor (NMF). When the moisture of the normal keratinocyte layer is maintained about 10 to 30%, the skin is smooth and soft, and the body protects normally.

However, when the moisture content of the keratinocyte layer is less than 10%, the skin becomes rough and the body loses its protective function, causing aging. For example, in the case of dry skin, the aggregation force of keratinocytes is weakened, and a scale phenomenon in which keratinocytes are peeled off like a piece of scale from the surface of the skin appears. Thus, the dryness of the skin is a moisture content of the keratinocyte layer. This is because it is less than normal skin. In addition, even healthy skin may suffer from a lack of moisture due to harsh external environment, ie, wind, cold weather, sunlight, face wash, shaving, and so on, may cause a bad skin condition.

Therefore, it is very important to properly maintain the moisture content of the keratinocyte layer of the skin. As a component for retaining the moisture of the stratum corneum, it is known that an oil-soluble component plays an important role in addition to a water-soluble moisturizing component such as NMF (natural moisturizing factor). That is, the oil-soluble component not only forms an oil film for suppressing moisture evaporation, but also maintains a certain amount of moisture (moisturizing performance), thereby maintaining keratinous moisture.

In research to give moisture to oily components, Japanese special office 54-129O8 contains esters of N-long chain acyl neutral amino acids and higher alcohols having 12 to 30 carbon atoms, and Japanese special command office 56-126O9 contains N-long chain acyl acid amino acids. Although amino acid derivatives, such as esters of higher alcohols having 8 to 22 carbon atoms, have been developed, these have low problems of moisturizing performance when blended into cosmetic compositions because of low moisturizing performance of the raw materials themselves.

And as an oily raw material excellent in moisture retention performance, the oily raw material which has a sterol group is developed. That is, Japanese Patent Application Laid-Open No. 59-2332O describes esters of fatty acids and sterols, and Japanese Patent Laid-Open Publication No. 05-112514 describes esters of N-long chain acyl neutral amino acids and sterols, respectively. However, esters having these sterols have improved moisturizing performance, but when blended into cosmetics, there is a problem of causing sticky feeling, deterioration of spreadability, deterioration of familiarity and heavy texture during and after use thereof.

In addition, Japanese Patent Application Laid-Open No. 03-275697 describes esters of N-long chain acyl acidic amino acids and sterols and ester mixtures of N-long chain acyl acidic amino acids and higher alcohols having 8 to 22 carbon atoms as oily raw materials having moisturizing performance. However, when these oily raw materials are also blended into the cosmetic composition, there is a problem of causing sticky feeling, deterioration of spreadability, deterioration of familiarity, heavy texture during and after use thereof.

Cosmetics containing water-soluble components such as moisturizers have been widely commercialized in O / W and W / O emulsion formulations, but cosmetics of oil-containing formulations containing water-soluble components are difficult to complete. Due to the extremely poor solubility, it is difficult to apply to oil formulations, and there is no technology containing water-soluble components in oil formulations due to problems of formulation stability such as separation and precipitation during manufacture. none.

In order to solve the problems of the prior art as described above, the present invention is excellent in moisture retention ability and effective in improving dry skin, and because it is not heavy, sticky or greasy, it is not only excellent in usability but also does not use emulsifier and does not have skin irritation. It is an object to provide an oily cosmetic composition containing a water-soluble component.

In order to achieve the above object, the present invention is an oily cosmetic composition containing a water-soluble component,

(a) 0.0001 to 20 parts by weight of a silica compound;

(b) 3 to 80 parts by weight of silicone elastomer;

(c) 0.0001 to 30 parts by weight of the water-soluble component; And

(d) 5-95 parts by weight of oil component

It provides a water-soluble component containing oil-type cosmetic composition comprising a.

Hereinafter, the present invention will be described in detail.

The inventors of the present invention, while studying an oil-based composition containing a water-soluble component, when appropriately combined with the silica-based compound, silicone elastomer and water-soluble component, it is possible to prepare an oil formulation excellent in long-term storage stability without using an emulsifier, Not only is it safe for the skin because it is not irritated by skin, it also provides moisture to the skin by containing water-soluble ingredients when applied to the skin, and prevents the evaporation of moisture in the skin by forming an oil film, which is excellent in moisturizing effect, silica and its derivatives, silicone elastomer And by containing a water-soluble component, it was confirmed that there is a heavy, sticky or greasy excellent usability which is a disadvantage of the oil formulation, and completed the present invention based on this.

Oil type cosmetic composition of the present invention comprises at least 0.0001 to 20 parts by weight of the silica-based compound, at least 3 to 80 parts by weight of at least one silicone elastomer, at least 0.0001 to 30 parts by weight of the water-soluble component and 5 to 95 parts by weight of the oil component. It is characterized by.

The silica and its derivatives are 0.0001 to 20.0 parts by weight, preferably 0.001 to 15 parts by weight. If the content is less than 0.0001 parts by weight, there is a problem in the long-term storage stability of the water-soluble component without the emulsifier, the content of the included water-soluble component is too small, the moisturizing effect is insignificant. When it exceeds 20.0 parts by weight, the silica powder content is too high, which is a problem in stability such as precipitation and separation in the oil formulation. The silicone elastomer is 3 to 80.0 parts by weight, preferably 5 to 75.0 parts by weight. If the content is less than 3 parts by weight, it is not possible to stabilize the water-soluble components entrapped in the silica by the three-dimensional polymer network, which causes a problem of long-term storage stability of the oil formulation. If it exceeds 80.0 parts by weight, the elastomer content is too high. It is not suitable as a formulation. The water-soluble component is 0.0001 to 30.0 parts by weight, preferably 0.001 to 25 parts by weight. If the content is less than 0.0001 parts by weight, the content of the water-soluble component is too small, the moisturizing effect is insignificant. If it exceeds 30.0 parts by weight, the content of the water-soluble component is too high to be included in the silica is difficult, and the extra water-soluble component without inclusion is a problem for stability, such as precipitation and separation in the oil formulation. Eventually, due to the proper content and combination ratio between silica and its derivatives, silicone elastomer and water soluble components, an oil formulation having excellent long-term storage stability without containing an emulsifier and producing a safe skin is prepared. The oily cosmetic composition of the present invention may contain 5 to 95 parts by weight of an oil component. If the oil component is less than 5 parts by weight, a problem arises in the stability of the formulation in the process of formulating the oil-based cosmetic composition, if it exceeds 95 parts by weight there is a problem that the content of the water-soluble component is too small to significantly reduce the moisturizing ability.

The silica-based compound used in the present invention may be one or more compounds selected from the group consisting of silica and derivatives thereof, and the silica derivatives include those having a hydrophilic surface and an amphiphilic surface. When using silica and / or silica derivatives having a hydrophilic table surface, the water-soluble component can be enclosed in the hydrophilic particles of silica and coated with a hydrophilic silica surface lipophilic and added to the oil phase. In the case of using silica and / or silica derivatives having an amphipathic surface, the water-soluble component may be included in the particles and then added to the oil phase as it is.

As the silica and its derivatives, one or more selected from the group consisting of silica and derivatives thereof, such as silica, silica dimethicone silylate, silica dimethyl silylate, and silica silylate, may be used. The said silica and its derivative (s) contain 1 type (s) or 2 or more types.

Silicone elastomers used in the present invention are characteristic components that form three-dimensional crosslinks after swelling in oil. The three-dimensional polymer network structure of the silicone elastomer increases the yield value of the silica and its derivatives incorporating the water-soluble component in the oil formulation, thereby increasing the long-term storage stability of the oil formulation without using an emulsifier. In addition, by applying moisture to the skin and forming a thin film to prevent evaporation of moisture in the skin, the moisturizing effect is maintained for a long time.

In the present invention, the silicone elastomer is made of dimethicone crosspolymer, dimethicone crosspolymer-3, dimethicone / phenyl vinyl dimethicone crosspolymer, dimethicone / polyglycerin-3 crosspolymer, dimethicone / vinyl dimethicone crosspolymer, or the like. One or more selected from the group can be used.

In the oil-based cosmetic composition of the present invention, the water-soluble component corresponds to the usual water-soluble component used in cosmetics. For example, moisturizers include 1,3-butylene glycol, glycerin, glycerin G-26, polyethylene glycol (300, 400, 1500, 400), propylene glycol, sorbitol, betaine, dipropylene glycol, maltitol, propylene One or two kinds of glycols and amino acids can be used, and water-soluble polymers include carbomer, xanthan gum, gellan gum, carboxymethylcellulose, alginate, gelatin, agar, polyacrylamide, and one or two of polyvinyl alcohols. Species can be used, and pigments, metal ion sequestrants, ethanol, etc. which are usual water-soluble components can be used.

The silica and its derivatives, silicone elastomers and water-soluble components have a ratio of [(a) silica and its derivatives + (b) silicone elastomer] / (c) water-soluble components in order to maintain usability, skin safety and moisturizing sustaining effect. It is preferable to use as much as possible, More preferably, it can be used in ratio of 1-100,000. If the ratio of [(a) silica and its derivatives + (b) silicone elastomer] / (c) water-soluble components is less than 0.1, the content of [(a) silica and its derivatives + (b) silicone elastomers] is too small, There is a problem in inclusion, and there is a problem in that long-term storage stability is significantly lowered. On the other hand, if it exceeds 1,000,000, the content of the water-soluble component is too small, there is a problem that the moisturizing ability is significantly reduced.

On the other hand, the oil component contained in the oil type cosmetic composition of the present invention is not particularly limited, any oil that can be used in cosmetics can be used. For example, vegetable oils, animal oils, mineral oils and synthetic oils can all be used. Specifically, olive oil, castor oil, palm oil, avocado oil, almond oil, malt oil, apricot oil, moon vinegar oil, rosehip oil, macadamia nut Oil, mink oil, liquid paraffin, petrolatum, myristic acid isopropyl, silicone oil, jojoba oil, green tea oil, sunflower seed oil, grape seed oil and the like can be used, but the present invention is not limited thereto.

The cosmetic composition of the present invention may further include a common ingredient blended with general skin cosmetics as needed. For example, it may further include at least one oil component selected from the group consisting of silicone fluid, silicone gum, silicone resin, oil-soluble polymer and waxes, water, humectant, lower alcohol, thickener, ethanol, chelating agent. And further components such as divalent metal salts, pigments, and preservatives.

In addition, the present invention comprises the step of encapsulating using 0.0001 to 30 parts by weight of the water-soluble component, 0.0001 to 30 parts by weight of the silica-based compound, coating the silica surface with lipophilic, adding to 3 to 80 parts by weight of the silicone elastomer and mixing And it provides a method for producing a water-soluble component-containing oil-type cosmetic composition comprising the step of adding the raw material mixed in the step 5 to 95 parts by weight of the oil component.

On the other hand, the cosmetic composition of the present invention as used on the skin can be prepared by processing in the usual cosmetic form, such as oil, emulsion, cream, essence, pack, skin patch, skin adhesive gel, ointment, or cosmetics. And various conventional carriers and additives suitable for each of these formulations and well known in the art.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

Example  1 to 5

In the composition ratio as shown in Table 1 below, the water-soluble component was first contained in silica and its derivatives (silica raw material), and then the silica surface was coated with oil solubility, and then added to the silicone elastomer and mixed by milling. The mixed raw materials as described above were added to the oily raw materials and stirred for 10 to 300 minutes with a homomixer (or disper, Henschel mixer) to prepare an oily cosmetic composition. Examples 3, 4 and 5 to which the solid phase raw material was added, prepared the composition after completely dissolving the oil phase at 60 ~ 70 ℃. The unit is parts by weight.

division Material name Example 1 Example 2 Example 3 Example 4 Example 5 Silica raw materials Silica 5.0 - 1.0 0.1 1.5 Silica silicate - 3.0 1.0 10.0 5.0 Water soluble ingredients Dipropylene glycol - 3.0 5.0 3.0 1.0 Concentrated glycerin 8.0 5.0 2.0 5.0 2.0 Betaine - - 0.5 0.8 1.0 Sodium lactate - - 2.5 2.5 3.5 Carbomer - - - - 0.01 antiseptic Quantity Quantity Quantity Quantity Quantity Pigment Quantity Quantity Quantity Quantity Quantity Triethanolamine Correct amount Quantity Quantity Quantity Quantity Purified water - - 1.2 1.2 1.2 ethanol - - - 0.5 1.0 Silicone elastomer Dimethicone Crosspolymer 1.0 - - 3.0 - Dimethicone / phenyl Vinyl Dimethicone Crosspolymer - 15.0 - 5.0 7.0 Dimethicone / Vinyl Dimethicone Crosspolymer 40.0 - 30.0 12.0 4.0 Oil-based raw materials Cyclopentasiloxane T0 100 T0 100 T0 100 T0 100 T0 100 Dimethicone - 5.0 5.0 5.0 5.0 Phenyltrimethicone - 3.0 5.0 1.0 5.0 Dimethicone Polyol 5.0 1.0 3.0 3.0 - Polysilicon-11 - 1.0 - 1.0 5.0 Dimethicone / Pig-10 / 15 Crosspolymer - 5.0 5.0 5.0 Green tea oil - 3.0 - 2.0 - Sunflower seed oil - - 2.0 3.0 1.0 Grapeseed oil - - 5.0 - - lanolin - - - 1.0 - Polydecene - - - 2.0 - Isocetylethylhexanoate - - - 1.0 3.0 Octanoin - 0.5 0.3 - - Solid phase raw material Cetostearyl alcohol - - 0.02 0.01 0.1 Beeswax - - - 0.01

Comparative example  1 to 4

To the composition ratio as shown in Table 2, Comparative Example 1 was added to the elastomer raw material and mixed by milling method to prepare a cosmetic composition in the same manner as in Example 1, Comparative Example 2 is a common oil formulation in the oil phase Silicone elastomers were added and mixed to make the composition.

On the other hand, Comparative Examples 3 and 4 in the same manner as in Example 3, after coating the surface of the silica with a water-soluble component in the silica raw material and then adding it to the oil-based raw material as a homomixer (or disper, Henschel mixer) The cosmetic composition was prepared by stirring for 10 to 300 minutes, and Comparative Examples 3 and 4, to which the solid phase raw material was added, prepared the composition after completely dissolving the oil phase at a temperature of 60 to 70 ° C. The unit is parts by weight.

division Raw material name Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Silica raw materials Silica - - 1.0 0.1 Silica silicate - - 1.0 10.0 Water soluble ingredients Dipropylene glycol - - 5.0 3.0 Concentrated glycerin 8.0 - 2.0 2.0 Betaine - - 0.5 0.8 Sodium lactate - - 2.5 5.5 Carbomer - - - - antiseptic Quantity Quantity Quantity Quantity Pigment Quantity Quantity Quantity Quantity Triethanolamine Correct amount Quantity Quantity Quantity Purified water - - 1.2 1.2 ethanol - - - 0.5 Silicone elastomer Dimethicone Crosspolymer 1.0 - - - Dimethicone / phenyl Vinyl Dimethicone Crosspolymer - 15.0 - - Dimethicone / Vinyl Dimethicone Crosspolymer 40.0 - - - Oil-based raw materials Cyclopentasiloxane T0 100 T0 100 T0 100 T0 100 Dimethicone - 5.0 5.0 5.0 Phenyltrimethicone - 10.0 5.0 10.0 Dimethicone Polyol 5.0 1.0 3.0 3.0 Polysilicon-11 - 1.0 - 1.0 Dimethicone / Pig-10 / 15 Crosspolymer 5.0 5.0 5.0 5.0 Green tea oil - 3.0 - 2.0 Sunflower seed oil - - 2.0 3.0 Grapeseed oil - - 5.0 - lanolin - - - 1.0 Polydecene - - - 2.0 Isocetylethylhexanoate - - - 1.0 Octanoin - 5.5 0.3 - Solid phase raw material Cetostearyl alcohol - - 0.02 0.01 Beeswax - - - 0.01

Comparative example  5

In the composition ratio as shown in Table 3, first, after dissolving the water-soluble component and the oily raw material by heating to about 75 ~ 80 ℃ each, emulsified for 5 minutes while stirring the mixture obtained by adding the oily raw material to the water-soluble component at a speed of 5,000 rpm with a homomixer And then cooled to prepare an O / W emulsion. Particularly, Comparative Example 5 used the conventional surfactant polysorbate 60, sorbitan stearate and cosurfactant cetostearyl alcohol, isostearyl alcohol and carboxypolymer as an emulsion stabilizer in a conventional manner. The unit is parts by weight.

division Raw material name Comparative Example 5 Oil-based raw materials Cyclopentasiloxane 2.0 Dimethicone 1.0 Cetostearyl alcohol 0.50 Isostearyl Alcohol 0.50 Beeswax 0.30 Squalane 4.00 Isocetyloctanoate 4.00 Dimethyl Polysiloxane 2.30 Polysorbate 60 1.50 Sorbitan stearate 1.50 Water soluble ingredients Concentrated glycerin 4.00 Dipropylene glycol 4.00 Carboxy Polymer 0.15 Triethanolamine 0.20 antiseptic Quantity Spices Quantity Pigment Quantity Purified water TO 100

Examples 1 to 5 and Comparative Examples 1 to 5 prepared as described above were evaluated by dividing the items into long-term storage stability, moisture retention capacity, dry skin improvement effect, skin safety, and ease of use.

Experimental Example  1: Long-term preservation stability evaluation

Long-term preservation stability of the composition obtained in Examples 1 to 5 and Comparative Examples 1 to 5 in units of 1 week, 1 month, and 6 months at 0 ° C., 40 ° C., 45 ° C., 50 ° C., a thermostatic chamber of cycle, and room temperature To evaluate the following evaluation criteria are shown in Table 4.

<Evaluation Criteria>

O: good, △: unstable, ×: separation

Item Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Example 1 Example 2 Example 3 Example 4 Example 5 0 ℃ 1 week ○ ○ △ △ ○ ○ ○ ○ ○ ○ 1 month △ ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ ○ ○ ○ ○ ○ 40 ℃ 1 week ○ ○ × × ○ ○ ○ ○ ○ ○ 1 month × ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ ○ ○ ○ ○ △ 45 ℃ 1 week ○ ○ × × ○ ○ ○ ○ ○ ○ 1 month × ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ △ ○ ○ ○ △ 50 ℃ 1 week ○ ○ × × ○ ○ ○ ○ ○ ○ 1 month × ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ △ △ ○ ○ △ Cycle 1 week △ ○ × × ○ ○ ○ ○ ○ ○ 1 month × ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ △ △ △ ○ △ Room temperature 1 week ○ ○ △ △ ○ ○ ○ ○ ○ ○ 1 month △ ○ × × ○ ○ ○ ○ ○ ○ 6 months × ○ × × ○ ○ ○ ○ ○ ○

As shown in Table 4, Examples 1 to 5 and Comparative Examples 2 and 5 were excellent in overall long-term storage stability, whereas Comparative Examples 1, 3 and 4 do not contain silica and its derivatives and silicone elastomers in the oil formulation. No stability is seen.

This is a clear comparative example showing the importance of silica and its derivatives and silicone elastomers in the preparation of oil-based cosmetics containing water-soluble components, and oil formulations containing water-soluble components with a single use of silica and its derivatives and silicone elastomers. It can be seen that the long-term storage stability of is very poor. Excellent stability of Comparative Example 2 is a general oil formulation does not contain water-soluble components, so there is no problem of solubility, so long-term storage stability is excellent, and Comparative Example 5 is excellent stability by including a separate emulsion stabilizer as a general o / w emulsion Do.

Proper amounts and combinations of silica and its derivatives, silicone elastomers and water soluble components of Examples 1 to 5 stabilized the three-dimensional polymer network structure of the silicone elastomer with silica and its derivatives encapsulating the water soluble component without emulsifiers, thus prolonging the preservation of the oil formulation. It can be seen that the stability is excellent.

Experimental Example  2: moisture Ability  evaluation

The water retention ability of the compositions obtained in Comparative Examples 2 and 5 and Examples 2, 3 and 4 was evaluated. Moisture retention capacity was measured by using SKICON-200 (IBS, Japan) to measure the electrical conductivity of the skin surface.The measurement condition was 0.03g per 16 cm² of skin in a constant temperature and humidity chamber maintained at 22 ° C and 50% relative humidity. After application, it was measured at each time period and repeated three times. There were 30 subjects and the unit was μ / Ω.

Experiment item Example 2 Example 3 Example 4 Comparative Example 2 Comparative Example 5 Primary 30 minutes after application 194 200 220 120 200 120 minutes after application 161 176 191 105 84 Secondary 30 minutes after application 200 205 221 125 194 120 minutes after application 165 179 195 107 89 3rd 30 minutes after application 193 195 218 129 186 120 minutes after application 163 171 198 102 87

As shown in Table 5, Examples 2, 3, 4 according to the present invention can be seen that the moisture retention capacity is superior to Comparative Examples 2, 5.

Comparative Example 2 is an oil formulation in which the short-term (30 minutes) moisturizing ability is significantly lower than that of Comparative Example 5, but the long-term (120 minutes) moisturizing ability is superior to Comparative Example 5 that the oil formulation forms an oil film on the skin, resulting in loss of moisture in the skin. Indicates that there is an effect that prevents. Comparative Example 5 is a general emulsion, it can be seen that the moisturizing ability is excellent in the short term (30 minutes) due to the smooth supply of moisture, but significantly decreased in the long term (120 minutes).

Moisture evaluation ability evaluation of the cosmetic composition of the present invention by taking only the advantages of the oil formulation and the general emulsification it can be seen that the water retention capacity is superior to the conventional general cosmetic composition. This indicates that the moisturizing effect is superior.

Experimental Example  3: evaluation of dry skin improvement effect

In order to evaluate the moisturizing power of the compositions obtained in Comparative Examples 2 and 5 and Examples 4 and 5 by another method, a dry skin improvement effect evaluation test was performed. The test was performed on 24 adult men and women with dry hand region twice a day for 3 months.

First, before using the sample, the scale generated on the skin of the area of 4 cm × 4 cm on the back of the subject's hand was selected as a dry evaluation parameter, and then the scale of the back of the hand was measured by a handheld microscope (Handy Scope). The scale area was measured using. Then, the cosmetics prepared according to Examples 4 and 5 and Comparative Examples 2 and 5 were each used for 3 months on the back of 24 test subjects, and then the scale area was measured. The results are shown in Table 6 below. . In Table 6 the figures are% of scale area over the total area.

division Example 4 Example 5 Comparative Example 2 Comparative Example 5 Before use 15.2 14.9 15.1 14.8 after use 3.2 3.6 5.2 5.4

As shown in Table 6, in the case of using the compositions prepared according to Examples 4 and 5, the scale area was significantly reduced compared to Comparative Examples 2 and 5, which is excellent in the dry skin improvement effect of Examples 4 and 5 It is displayed.

Experimental Example  4: skin safety assessment

Skin safety was evaluated by skin patch experiment with Examples 1, 3 and 5 and Comparative Examples 2 and 5, and a total of 90 people (73: males, 17: males) who had experienced skin side effects by cosmetics After the application of the patch on the patient's back 48 hours after the patch was removed, the first judgment was made after 1 to 2 hours, after 72 hours or 96 hours was determined and the results are shown in Table 7 below.

Item Positive reaction % Example 1 0 (+) 0.0 Example 3 1 (+) 1.1 Example 5 1 (+) 1.1 Comparative Example 5 3 (+) 3.5

As shown in Table 7, the cosmetic compositions of Examples 1, 3 and 5 according to the present invention do not contain an emulsifier when compared to Comparative Example 5 it can be seen that the skin safety is excellent.

Experimental Example  5: ease of use

Ease of use was evaluated for Comparative Examples 2 and 5 and Examples 2, 4 and 5. That is, each of the comparative sample and the example sample in ten units, for example, (Comparative Example 2, Example 2), (Comparative Example 5, Example 2), and the like, for a total of 60 subjects as follows. Sensory evaluation under the evaluation criteria are shown in Table 8 below.

<Evaluation Criteria>

1: very bad, 2: bad, 3: slightly bad, 4: normal

5: slightly good, 6: good, 7: very good

Item Comparative Example 2 Comparative Example 5 Example 2 Example 4 Example 6 heaviness 2.5 5.5 5.9 5.7 5.7 Bundle 2.5 5.7 5.7 6.4 6.4 Sticky 3.0 4.3 5.7 5.7 5.7 Moist 5.5 4.3 6.0 6.4 6.6 pepper 6.4 4.7 6.4 6.4 6.6

As shown in Table 8, Examples 2, 4, and 5, compared to Comparative Examples 2 and 5, there is no heavy feeling, no shine and stickiness, moist, no stimulation was evaluated as the best use convenience.

As described above, the oil-based cosmetic composition containing the water-soluble component according to the present invention is very excellent in moisturizing effect and dry skin improvement effect by maintaining the appropriate content and the appropriate blending ratio of silica and its derivatives, silicone elastomer and water-soluble component. It has excellent in vivo safety and has no heavy, stickiness or grease which is a disadvantage of the existing oil formulations, so it has excellent usability, and moisturizes the skin and forms a thin film when applied to prevent evaporation of moisture to provide a continuous moisturizing effect. Excellent effect.

Claims (10)

In a water-soluble component containing oil type cosmetic composition, (a) 0.0001 to 20 parts by weight of at least one silica-based compound selected from the group consisting of silica, silica dimethicone silylate, silica dimethyl silylate, and silica silylate; (b) dimethicone crosspolymer, dimethicone crosspolymer-3, dimethicone / phenyl vinyl dimethicone crosspolymer, dimethicone / polyglycerin-3 crosspolymer, and dimethicone / vinyl dimethicone crosspolymer; 3 to 80 parts by weight of at least one silicone elastomer; (c) 0.0001 to 30 parts by weight of the water-soluble component; (d) 5 to 95 parts by weight of at least one oil component selected from the group consisting of vegetable oils, animal oils, mineral oils, and synthetic oils; And (e) 1.2 parts by weight or less of water Including, The water-soluble component is 1,3-butylene glycol, glycerin, glycerin G-26, polyethylene glycol (300, 400, 1500, 400), propylene glycol, sorbitol, betaine, dipropylene glycol, maltitol, propylene glycol, and Moisturizing agent selected from the group consisting of amino acids or at least one member selected from the group consisting of water-soluble polymers, pigments, and ethanol, A water-soluble component-containing oil-based cosmetic composition, characterized in that the water-soluble component is included in the particles of the silica compound. The oily cosmetic composition according to claim 1, wherein the ratio of [(a) silica compound + (b) silicone elastomer] / (c) water-soluble component is 0.1 to 1,000,000. delete delete delete delete delete delete The oily cosmetic composition according to claim 1, wherein the cosmetic composition further comprises one or more oil-based components selected from the group consisting of silicone fluid, silicone gum, silicone resin, oil-soluble polymer, wax and perfume. The oily cosmetic composition according to claim 1, wherein the cosmetic composition further comprises a water-soluble component selected from the group consisting of a moisturizer, ethanol, a thickener, a chelating agent, a pigment, a preservative, and a divalent metal salt.