KR20230044827A - Oil-in Water type cosmetic composition comprising high level of Dipropylene glycol - Google Patents

Abstract

The present invention relates to a cosmetic composition, which, by including a high content of dipropylene glycol, moisturizing power is improved, and the feeling of use and stability are improved.

Description

Oil-in Water type cosmetic composition comprising high level of Dipropylene glycol}

It relates to a cosmetic composition.

The skin is largely divided into three layers: epidermis, dermis, and subcutaneous fat tissue in order from the outside, and functions to protect the human body from physical and chemical stimuli in the external environment. Controls the evaporation of 70% of water to the outside of the body. Among them, the epidermis is divided into the stratum corneum, the granular layer, the stratum corneum, and the basal layer in order from the outside. Block excessive penetration of substances from the outside. The cells constituting the stratum corneum contain a high concentration of natural moisturizing factor, a water-soluble component, which not only acts to make the skin flexible but also helps to maintain appropriate moisture. However, due to changes in the environment or lifestyle, various stresses and environmental pollution from social life, frequent face washing due to makeup habits, and natural skin aging due to age, the skin becomes dry due to a decrease in moisture in the stratum corneum. The problem of skin moisturizing is becoming more and more important as phenomena such as aging, surface roughness, and skin loss of luster and dull appearance occur.

On the other hand, dipropylene glycol is a colorless, odorless, low-viscosity water-soluble liquid that has the property of attracting moisture, so when applied to the skin, it helps the epidermis to contain moisture, making the skin soft and smooth, and soothing. It is widely used as a component of moisturizing cosmetics because it is not only effective but also does not show toxicity to the skin.

As the content of dipropylene glycol increases, the moisturizing power increases, but the sticky and wet feeling of use stands out, resulting in strong consumer resistance to the product. There are almost no products containing dipropylene glycol, and the limit is 10% for dipropylene glycol alone and 20% for combinations with other polyols. In addition to the problem of the feeling of use, the cosmetic composition containing high content of dipropylene glycol also has a problem of component separation due to lack of stability at high temperature and stability during long-term storage.

Therefore, it is necessary to develop a cosmetic composition containing high dipropylene glycol having excellent moisturizing power and improved usability and stability.

One aspect is to provide a cosmetic composition containing a high content of dipropylene glycol.

One aspect provides a cosmetic composition containing a high content of dipropylene glycol. The cosmetic composition includes an aqueous phase portion containing 15% by weight or more of dipropylene glycol based on the total weight of the composition; Glyceryl Stearate SE, Cetearyl Olivate, Sorbitan Olivate, Cetearyl Alcohol, Behenyl Alcohol, and Cetearyl It may include an oil phase containing an emulsifier selected from the group consisting of glutocide (Cetearyl Glucoside).

The dipropylene glycol is known to have no skin toxicity, high moisturizing effect and dermatitis improving effect. In particular, dipropylene glycol has a property of attracting moisture, so when applied to the skin, it can not only make the skin soft and smooth, but also exhibit a skin soothing effect. Conventional dipropylene glycol-containing cosmetics, when contained in excess of a certain amount, have a sticky and wet feeling of use, resulting in poor consumer satisfaction and reduced formulation stability. However, the cosmetic composition according to one aspect includes a high content of dipropylene glycol, thereby maximizing the advantages and overcoming the disadvantages of conventional dipropylene glycol-containing cosmetics.

Therefore, the cosmetic composition according to one embodiment may include 15% by weight or more of dipropylene glycol based on the total weight of the composition. The dipropylene glycol is, for example, 15% by weight or more, 20% by weight or more, 25% by weight or more, 40% by weight or more, 50% by weight or more, 70% by weight or more, 15 to 40% by weight, based on the total weight of the composition, 15 to 35% by weight, 15 to 30% by weight, 15 to 25% by weight, 20 to 40% by weight, 20 to 35% by weight, or 20 to 25% by weight, 23 to 30% by weight. At this time, when the content of dipropylene glycol is less than the above range, there is a problem that the skin improvement effect cannot be sufficiently exhibited.

The aqueous phase part may include ammonium acryloyldimethyltaurate/VP copolymer as a thickening agent. In one embodiment, the thickener may include 0.01 to 2% by weight based on the total weight of the composition. The thickener is included in an amount of, for example, 0.01 to 2% by weight, 0.01 to 1.5% by weight, 0.05 to 1.5% by weight, 0.05 to 1% by weight, 0.07 to 1.2% by weight, or 0.09 to 1% by weight, based on the total weight of the composition. can At this time, when the content of the thickener is less than the above range, there is a problem that it is difficult to maintain the viscosity of the cosmetic composition, and when it exceeds the above range, there is a problem that the wet feeling inherent in dipropylene glycol stands out, resulting in poor customer satisfaction.

The oil phase part may include an emulsifier selected from the group consisting of glyceryl stearate SE, cetearyl olivate, sorbitan olivate, cetearyl alcohol, behenyl alcohol, and cetearyl glusocide. The emulsifier may be included in an amount of 7 to 10% by weight based on the total weight of the composition. The emulsifier may be included in, for example, 7 to 10% by weight, 7 to 7.5% by weight, 7 to 9% by weight, 7 to 8.5% by weight, or 7.3 to 8.4% by weight based on the total weight of the composition. At this time, when the content of the emulsifier is less than or exceeds the above range, there is a problem in that the formulation itself is not formed or the formulation is separated due to low stability of the formulation. In one embodiment, in the case of a cosmetic composition comprising an emulsifier including glyceryl stearate SE, cetearyl olive, sorbitan olive, cetearyl alcohol, behenyl alcohol, and cetearylglusocide, glyceryl Compared with a cosmetic composition containing an emulsifier containing some of stearate SE, cetearyl olive, sorbitan olive, cetearyl alcohol, behenyl alcohol, and cetearylglusocide, emulsion stability and high temperature stability are improved. It was confirmed that it was excellent. Therefore, the cosmetic composition according to one embodiment may include an emulsifier including glyceryl stearate SE, cetearyl olive, sorbitan olive, cetearyl alcohol, behenyl alcohol, and cetearylglusocide. there is.

In another embodiment, the emulsifier is 0.1 to 5% by weight of glyceryl stearate SE, 0.1 to 3% by weight of cetearyl olive, 0.1 to 3% by weight of sorbitan olivate, based on the total weight of the composition 5% by weight of cetearyl alcohol, 0.1 to 5% by weight of behenyl alcohol, and 0.1 to 5% by weight of cetearylglusocide. The glyceryl stearate SE may be included in an amount of 0.1 to 5% by weight based on the total weight of the composition. The glyceryl stearate SE is, for example, 0.1 to 5% by weight, 0.1 to 4% by weight, 0.1 to 3% by weight, 0.5 to 5% by weight, 0.5 to 4.5% by weight, 0.5 to 2.5% by weight based on the total weight of the composition. % or 1 to 3% by weight. In addition, the cetearyl olivate may be included in an amount of 0.1 to 3% by weight based on the total weight of the composition. In addition, the cetearyl olivate is, for example, 0.1 to 3% by weight, 0.1 to 2.4% by weight, 0.1 to 2% by weight, 0.5 to 3% by weight, 0.5 to 1.5% by weight or 0.1 to 3% by weight based on the total weight of the composition. 1% by weight. In addition, the sorbitan olivate is, for example, 0.1 to 3% by weight, 0.1 to 2.4% by weight, 0.1 to 2% by weight, 0.5 to 3% by weight, 0.5 to 1.5% by weight or 0.1 to 1% by weight based on the total weight of the composition. % can be included. In addition, the cetearyl alcohol may be included in an amount of 0.1 to 5% by weight based on the total weight of the composition. The cetearyl alcohol is present in an amount of, for example, 0.1 to 5% by weight, 0.1 to 4% by weight, 0.1 to 3% by weight, 0.5 to 5% by weight, 0.5 to 4.5% by weight, or 0.5 to 2.5% by weight, based on the total weight of the composition. or 1 to 3% by weight. In addition, the behenyl alcohol may be included in an amount of 0.1 to 5% by weight based on the total weight of the composition. The behenyl alcohol is present in an amount of, for example, 0.1 to 5% by weight, 0.1 to 4% by weight, 0.1 to 3% by weight, 0.5 to 5% by weight, 0.5 to 4.5% by weight, 0.5 to 2.5% by weight, or 0.5 to 2.5% by weight, based on the total weight of the composition. It may be included in 1 to 3% by weight. In addition, the cetearyl glusocide may be included in an amount of 0.1 to 5% by weight based on the total weight of the composition. The cetearylglusocide is, for example, 0.1 to 5% by weight, 0.1 to 4% by weight, 0.1 to 3% by weight, 0.5 to 5% by weight, 0.5 to 4.5% by weight, 0.5 to 2.5% by weight based on the total weight of the composition. % or 1 to 3% by weight. At this time, when the content of glyceryl stearate SE, cetearyl olive, sorbitan olive, cetearyl alcohol, behenyl alcohol or cetearylglusocide is less than or exceeds the above range, the formulation There is a problem that the stability is lowered and the phase separation phenomenon occurs.

The oil phase part may further include silicone oil. Silicone oil is a type of mineral oil and fat. It is non-sticky and has good spreadability, so it is light to use, stable at various temperatures, and non-toxic to the skin. Therefore, the cosmetic composition according to one aspect can further improve the moist feeling of use of the remaining dipropylene glycol by further including silicone oil. The silicone oil is, for example, dimethicone, trimethicone, methyltrimethicone, phenyltrimethicone, amodimethicone, cyclomethicone, dimethiconol, vinyldimethicone, propoxytetramethylpiperidinyl It may be dimethicone, cyclotetrasiloxane, cyclopentasiloxane, cyclohexasiloxane, methyl ether dimethylsilane, and copolymers thereof. In one embodiment, the silicone oil may be included in less than 10% by weight based on the total weight of the composition. The silicone oil may be included in less than 10% by weight, less than 9% by weight, less than 8% by weight, less than 6% by weight, less than 5% by weight, less than 3% by weight or less than 1% by weight based on the total weight of the composition. At this time, when the content of the silicone oil exceeds the above range, there is a problem that the silicone oil is difficult to emulsify.

In one embodiment, the cosmetic composition may be of the water type (Oil-in-Water, O/W). Therefore, the cosmetic composition is selected by selecting ingredients included in conventional emulsified cosmetic compositions, that is, moisturizing ingredients such as antioxidants, polyhydric alcohols, and hyaluronic acid, various vitamins, preservatives, colorants, fragrances, and sunscreen ingredients. can be added.

The cosmetic composition according to one aspect has an effect of improving the feeling of use and stability as well as improving moisturizing power by including dipropylene glycol in a high content.

Hereinafter, a preferred embodiment is presented to aid understanding of the present invention. However, the following examples are provided to more easily understand the present invention, and the content of the present invention is not limited by the following examples.

[Example]

Examples 1-4. Preparation of cosmetic composition containing high content of dipropylene glycol

An in-water cosmetic composition containing the ingredients and contents of Table 1 was prepared. Specifically, the components of the aqueous phase were weighed in a beaker according to their respective contents and dissolved by heating at 70 to 80 ° C. Components of the oil phase were weighed into a beaker according to their respective contents and dissolved by heating at 70 to 80 ° C. Thereafter, the oil phase was slowly added to the water phase and stirred constantly at 140 rpm for 10 minutes. Unless otherwise indicated in this specification, content is in weight percent.

ingredient Example 1 Example 2 Example 3 Example 4 Awards Moisturizers and Solvents Purified water TO 100 TO 100 TO 100 TO 100 Dipropylene Glycol 20.00 25.00 20.00 25.00 glycerin 5.00 5.00 5.00 5.00 Butylene Glycol 8.00 8.00 8.00 8.00 xanthan gum 0.05 0.50 0.50 0.50 thickener Ammonium acryloyldimethyltaurate/VP copolymer 0.60 1.00 0.60 0.60 preservative 0.30 0.30 0.30 0.30 Paid emulsifier Glyceryl Stearate SE 1.00 1.00 1.50 1.00 Cetearyl Olivate 0.90 0.90 1.00 0.90 Sorbitan Olivate 0.90 0.90 1.00 0.90 Cetearyl Alcohol 3.00 3.00 3.00 3.50 behenyl alcohol 1.50 1.50 1.50 2.00 Cetearyl Glucoside 0.10 0.10 0.10 0.20 oil dicaprylyl carbonate 3.00 3.00 3.00 3.00 Methyl Trimethicone 1.50 1.50 1.50 1.50 shea butter 2.00 2.00 2.00 2.00

[Comparative example]

Comparative Examples 1 to 3. Preparation of cosmetic composition containing high content of dipropylene glycol

An oil-in-water cosmetic composition was prepared in the same manner as in the above example, except that the ingredients and contents of Table 2 were included.

ingredient Comparative Example 1 Comparative Example 2 Comparative Example 3 Awards Moisturizers and Solvents Purified water TO 100 TO 100 TO 100 Dipropylene Glycol 20.00 25.00 20.00 glycerin 5.00 5.00 5.00 Butylene Glycol 8.00 8.00 8.00 xanthan gum 0.05 0.50 0.50 thickener Ammonium acryloyldimethyltaurate/VP copolymer - - 1.00 preservative 0.30 0.30 0.30 Paid emulsifier Glyceryl Stearate SE 2.00 - 0.50 Cetearyl Olivate - 1.00 0.75 Sorbitan Olivate - 1.00 0.75 Cetearyl Alcohol 3.00 3.00 - behenyl alcohol 1.50 1.50 - Cetearyl Glucoside 0.10 0.10 - oil dicaprylyl carbonate 3.00 3.00 3.00 Methyl Trimethicone 1.50 1.50 1.50 shea butter 2.00 2.00 2.00

[Experimental example]

Check emulsion stability

Emulsion stability according to one aspect was confirmed. Specifically, Examples 1 to 4 and Comparative Examples 1 to 3 were placed in an air tight container at room temperature for 1 day and aged. Thereafter, the aged composition was observed at 25° C. for 7 days to determine stability due to phase separation.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 emulsion stability O O X X X X X

<Judgment Criteria - O: Good, X: Separation>

As a result, as shown in Table 3, in Comparative Examples 1 to 3 containing no emulsifier, phase separation occurred and formulations were not formed. On the other hand, in the case of Examples 1 and 2, it was confirmed that the emulsion stability was very excellent. In particular, in the case of Examples 3 and 4, phase separation occurred, which is considered to be because the content of the emulsifier affected the stability.

That is, it can be seen that the cosmetic composition according to one aspect has excellent emulsion stability by including a specific emulsifier in a specific content.

Formulation stability confirmation

Formulation stability according to the temperature of the cosmetic composition according to one aspect was confirmed. Specifically, after preparing the cosmetic compositions of Examples 1 to 4 and Comparative Examples 1 to 3, storage at 4 ° C, room temperature (25 ° C), 45 ° C and 60 ° C for 1 month, observation of phase separation of the emulsion And it is shown in Table 4 below.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 4℃ O O X X X X X 25℃ O O X X X X X 45℃ O O X X X X X 60℃ O O X X X X X

<Judgment Criteria - O: Good, X: Separation>

As a result, as shown in Table 4, in the case of Examples 3 to 4 and Comparative Examples 1 to 3, it was confirmed that phase separation occurred in all temperature ranges. In particular, in the case of Comparative Examples 1 to 3 not containing an emulsifier, it was confirmed that the cream formulation flowed while the viscosity decreased. On the other hand, in the case of Examples 1 and 2, it was confirmed that a stable formulation was maintained without phase separation occurring in all temperature ranges.

That is, by including a specific emulsifier in a specific content, the cosmetic composition according to one aspect can maintain low temperature, room temperature and high temperature stability even though it contains a high content of dipropylene glycol.

Check the feeling of use and moisturizing power

The usability and moisturizing power of the cosmetic composition according to one aspect were confirmed. Specifically, 20 adult men and women in their 20s to 40s without skin disease were allowed to use it twice daily for 1 month, and then evaluated the feeling of use according to the following criteria.

* Evaluation scale: 1 point - very bad, 2 points - bad, 3 points - average, 4 points - good, 4.5 points - very good

spreadability absorptivity freshness moisturizing power Moisturizing persistence overall satisfaction Example 1 3.9 4.1 3.8 3.5 3.8 3.82 Example 2 4.5 4.2 4.3 4.1 4.5 4.32

As a result, as shown in Table 5, Examples 1 and 2 had an average overall satisfaction of 3.82 and 4.32 points, including applicability, absorption, freshness, moisturizing power, and moisturizing durability, respectively, and it was confirmed that the feeling of use was relatively excellent. Particularly, in Example 2, excellent scores were obtained overall, which was due to the content of dipropylene glycol.

That is, the cosmetic composition according to one aspect not only improves moisturizing power by including dipropylene glycol in a high content, but also has an effect of improving the sticky and wet feeling of dipropylene glycol by giving a fresh feeling.

Measurement of skin conductance

In general, skin conductivity is proportional to the amount of skin moisture, and skin conductivity was measured to confirm the skin moisturizing effect of the cosmetic composition according to one aspect. Specifically, after dividing 25 adult males and females in their 20s to 40s without skin disease into two groups, each group applied Examples 1 and 2 twice daily to the face and forearm for one month. Before application, skin conductivity was measured using a corneometer (CM820 courage Khazaka electronic GmbH, Germany) under constant temperature and humidity conditions (24℃, 40% humidity), and after 1, 2, and 4 weeks of application, skin conductivity was measured. After evaluating the increase rate, it is shown in Table 6 below.

1 week later 2 weeks later 4 weeks later Example 1 42 49 54 Example 2 48 60 63

As a result, as shown in Table 6, it was confirmed that the skin conductivity of Examples 1 and 2 increased with use time. Specifically, in the case of Example 1, it was confirmed that the skin conductivity increased by 42, 49, and 54% or more, respectively, compared to before use, and in the case of Example 2, by 48, 60, and 63%, respectively. Compared to Example 1, it was confirmed that the increase rate of skin conductivity was higher in Example 2, which was due to the content of dipropylene glycol.

That is, since the cosmetic composition according to one aspect contains dipropylene glycol in a high content, the skin moisturizing ability is improved, and thus, it can have excellent effects on skin moisturizing, wrinkle improvement and dermatitis improvement.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

Claims (6)

An aqueous phase containing 15% by weight or more of dipropylene glycol based on the total weight of the composition; Glyceryl Stearate SE, Cetearyl Olivate, Sorbitan Olivate, Cetearyl Alcohol, Behenyl Alcohol, and Cetearyl An oil-in-water cosmetic composition comprising an oil phase containing an emulsifier selected from the group consisting of Cetearyl Glucoside. The cosmetic composition according to claim 1, wherein the aqueous phase portion comprises ammonium acryloyldimethyltaurate/VP copolymer as a thickening agent. The cosmetic composition according to claim 1, wherein the emulsifier is glycerylstearate SE, cetearylolivate, sorbitanolivate, cetearylalcohol, behenylalcohol, and cetearylglusocide. The cosmetic composition according to claim 1, wherein the emulsifier is included in an amount of 7 to 10% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the oil phase part further comprises silicone oil. The method according to claim 3, based on the total weight of the composition 0.1 to 5% by weight of glyceryl stearate SE, 0.1 to 3% by weight of cetearyl olivate, 0.1 to 3% by weight of sorbitan olivate, 0.1 to 5% by weight of A cosmetic composition that is cetearyl alcohol, 0.1 to 5% by weight of behenyl alcohol, and 0.1 to 5% by weight of cetearylglusocide.