KR102557085B1 - Oil-in-water cosmetic composition comprising oil gelling agent and process of the preparation thereof - Google Patents

Abstract

The present invention, oil; oil gelling agents including polyurethane-based polymers, amino acid-based compounds, and waxes; and inorganic particles, wherein the oil gelled by the oil gelling agent is absorbed by the inorganic particles, and the gelled oil absorbed by the inorganic particles is dispersed in an aqueous phase, and a method for producing the oil-in-water cosmetic composition. According to the composition of the present invention, the oily components are finely and stably dispersed in the water phase without a surfactant to improve skin itching or redness caused by the surfactant, while having an underwater-type feeling, skin affinity, skin absorption rate, spreadability, and skin moisturizing power and the like can provide an excellent cosmetic composition.

Description

Oil-in-water cosmetic composition comprising oil gelling agent and process of the preparation thereof}

The present invention relates to an oil-in-water cosmetic composition comprising oil, an oil gelling agent and inorganic particles, and more specifically, an oil; oil gelling agents including polyurethane-based polymers, amino acid-based compounds, and waxes; and inorganic particles, wherein the oil gelled by the oil gelling agent is absorbed by the inorganic particles, and the gelled oil absorbed by the inorganic particles is dispersed in an aqueous phase and a method for producing the same.

Cosmetics are originally used as a means of reinforcing or restoring the original defense function against the influence of the external environment, such as dust, chemicals, microorganisms, and internal substances, such as water, fat, and electrolytes. Another purpose of cosmetics, especially basic cosmetics, is to supplement the loss of moisture and fat in the skin caused by daily face washing. In particular, it can play a very important role when the skin's self-healing ability is insufficient.

Emulsion simply refers to a phase comprising a fine phase surrounded by an emulsifier. For example, if the fine phase is water particles, it is a water-in-oil emulsion, and if it is an oil particle, it is an oil-in-water emulsion. In general, emulsification requires a surfactant (emulsifier) because one liquid must be semi-permanently dispersed in another liquid. A surfactant is a molecule having an amphiphilic structure and has a hydrophilic part and a lipophilic part. In emulsification, finely dispersed particles in one phase are wrapped in an emulsifier film. Surfactants are located at the interface between two liquids to lower the interfacial tension, and form an oil/water interface film at the phase boundary to prevent particles from coalescing with each other.

A variety of commercially available surfactants are used with safety approval, but chemical surfactants can nevertheless cause irritation or allergy. In addition, surfactants have a harmful effect on the skin. Specifically, most surfactants, like detergents, tend to form micelles by solubilizing skin lipids, and when lipids are lost through continued use of surfactants, the protective barrier is weakened and skin permeability increases. The barrier with increased permeability easily loses moisture, resulting in dull and dry skin. In addition, penetration of foreign substances is facilitated, resulting in sensitive skin reactions. Due to the nature of these general surfactants, natural surfactants that can be obtained from nature have been sought, and among them, lecithin has been widely used. However, pure lecithin is not widely used in cosmetics due to odor and discoloration problems, and hydrogenated lecithin, which is widely used, has a packing parameter greater than 1/3 and less than 1 due to its chemical structure, so it is difficult to form a double membrane like liposomes rather than emulsions. Because of its stronger properties, it did not serve as an appropriate surfactant.

Examples of emulsification that does not contain a surfactant include an emulsification method using a similar surfactant or a polymer having amphipathic properties. The former is a method of making a stable emulsion by adding high-pressure energy after forming a temporary emulsified form using a similar surfactant (e.g., US Patent US 6,777,450), and the latter is a method of emulsifying using a hydrophilic and lipophilic moiety in a polymer. way. However, with these emulsification methods, there is a disadvantage that emulsification in the form of water-in-oil type is difficult. As another method, there is Pickering emulsification using organic or inorganic particles instead of surfactants. In this emulsification method, the particles used instead of the surfactant have a property of being well wetted in the dispersion medium but not well wetted in the dispersed phase. The wettability of the particles is directly related to the contact angle of the particles at the water-oil interface, so it is a very important property to arrange the particles at the interface like a surfactant. Particles that are well wetted by water, such as silica, will stabilize oil-in-water emulsions, and particles that are well wetted by oil, such as carbon black, will stabilize water-in-oil emulsions. However, if the particles are too hydrophilic or too lipophilic, the particles do not exist at the interface and are dispersed in water and oil, respectively. For example, Korean Patent Application No. 2003-0069400 contains hydrophilic silica and lipophilic titanium dioxide in the inner phase to make an oil-in-water emulsion (Patent Document 1), and Korean Patent Application No. 2002-0054603 contains polymethylsilsesqui A water-in-oil emulsion was made using amphiphilic particles called oxane (Patent Document 2). In addition, US patents US 6,803,049 and US 5,833,951 also reported on Pickering emulsification using inorganic particles. However, this Pickering emulsification has the advantage of improving the skin safety and feeling of use of the emulsion using the existing surfactant, but has a disadvantage of poor water resistance.

Accordingly, the inventors of the present invention improved the itching or redness of the skin caused by surfactants by not using surfactants and continued research to develop a cosmetic that exhibits excellent effects as a cosmetic while having a feeling of use like an underwater type. has been completed.

Republic of Korea Patent Application No. 2003-0069400 Republic of Korea Patent Application No. 2002-0054603

An object of the present invention is to provide a cosmetic composition in which oil phase components are stably dispersed in an aqueous phase without a surfactant. In addition, it is an object of the present invention to provide a stable surfactant-free cosmetic composition having a feeling of use like an oil-in-water type, excellent skin affinity, and improved skin moisturizing power.

In addition, an object of the present invention is to provide a method for preparing the surfactant-free cosmetic composition.

The present invention, oil; oil gelling agents including polyurethane-based polymers, amino acid-based compounds, and waxes; And inorganic particles, and the oil gelled by the oil gelling agent provides an oil-in-water cosmetic composition absorbed by the inorganic particles.

The gelled oil absorbed by the inorganic particles according to the present invention can be dispersed in the aqueous phase to form an oil-in-water cosmetic composition without a surfactant.

The oil-in-water cosmetic composition according to the present invention can be finely and stably dispersed in the water phase without a surfactant. Accordingly, it is possible to reduce skin irritation such as skin itching or redness caused by surfactants. In addition, it is possible to obtain a cosmetic having an underwater-type feeling of use, excellent skin affinity, high skin absorption rate, good spreadability, and improved skin moisturizing power. In addition, it is possible to obtain a visually transparent effect, and it is possible to develop a cosmetic product that makes the skin more moist because it has good moisturizing power and can keep the skin flexible without a surfactant.

1 is a photograph for a particle comparison test of the cosmetic compositions of Example 1 and Comparative Example 1 according to Test Example 1.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The present invention, oil; oil gelling agents including polyurethane-based polymers, amino acid-based compounds, and waxes; And it provides an oil-in-water cosmetic composition containing inorganic particles. Here, the oil is gelled by the oil gelling agent, the oil gelled by the oil gelling agent is absorbed by inorganic particles, and the gelled oil absorbed by the inorganic particles is dispersed in the water phase.

The gelled oil absorbed by the inorganic particles can be dispersed in the aqueous phase without a surfactant. In other words, since the gelled oil is absorbed by the inorganic particles, the oil does not coalesce with each other, so the stability of the formulation increases, and the inorganic particles absorbed by the gelled oil generate an electrostatic repulsive force between the inorganic particles absorbed by the gelled oil. As it is possible to maintain a uniform distance between the particles, it can be finely dispersed in the water phase. Such a cosmetic composition can be applied transparently to the skin, has a feeling of water droplets bursting on the skin surface, and can form a formulation that can provide a deep moisturizing feeling to the skin without irritation.

The oil gelling agent may be 0.1 to 15% by weight, 0.1 to 12% by weight, 0.1 to 10% by weight, or 0.5 to 5% by weight, most preferably 0.75 to 4.3% by weight, based on the total weight of the cosmetic composition. When the oil gelling agent is included in less than 0.1% by weight, oil gelation cannot be expected, and when included in more than 15% by weight, the hardness is too high and the oil is not finely dispersed.

The polyurethane-based polymer is HDI/trimethylolhexyllactone crosspolymer; and at least one selected from the group consisting of HDI/PPG/polycaprolactone crosspolymer, preferably HDI/trimethylolhexyllactone crosspolymer.

The amino acid-based compound may be a glutamide-based compound.

The amino acid compound may be dibutyllauroylglutamide, dibutylethylhexanoylglutamide, or a combination thereof, preferably dibutyllauroylglutamide and dibutylethylhexanoylglutamide. can be a combination.

The wax may be a hydrocarbon-based wax.

The wax may be at least one selected from the group consisting of ceresin wax, polyethylene wax, microcrystalline wax, paraffin wax, mineral wax including ozokerite, or vegetable wax including carnauba wax and candelilla wax, preferably Preferably, it may be a microcrystalline wax.

The combination of the polyurethane-based polymer, the amino acid-based compound, and the wax can make the oil gel. In the case of using the oil gelling agent of the combination as described above, since the melting points of each raw material are different, the stability of the formulation may be wide.

The inorganic particles may be porous inorganic particles.

The inorganic particles are selected from the group consisting of silica, mica, sericite, titanium dioxide, iron oxide, zinc oxide, synthetic mica, alumina, boron nitride, polymethyl methacrylate, polymethylsilsesquioxane and polypropylsilsesquioxane. It may be one or more selected, and preferably, the inorganic particles may be silica. Silica is well wetted with aqueous phase components and can easily stabilize oil-in-water emulsification.

The inorganic particles may be 1 to 10% by weight, preferably 3 to 8% by weight, based on the total weight of the cosmetic composition.

When the inorganic particles are included in less than 1% by weight, oil cannot be absorbed evenly, and when they are included in more than 10% by weight, the moisturizing feeling and softness of the prepared contents are significantly lowered.

The polyurethane-based polymer may be 0.01 to 1% by weight, 0.01 to 0.8% by weight, 0.03 to 0.8% by weight, 0.03 to 0.6% by weight, or 0.03 to 0.4% by weight, most preferably 0.05 to 0.4% by weight, based on the total weight of the cosmetic composition. It may be 0.3% by weight.

The amino acid-based compound may be 0.05 to 5% by weight, 0.1 to 4.5% by weight, 0.1 to 4% by weight, or 0.1 to 3.5% by weight, most preferably 0.2 to 2% by weight, based on the total weight of the cosmetic composition. . When the amino acid compound is dibutyllauroylglutamide, dibutylethylhexanoylglutamide, or a combination thereof, the dibutyllauroylglutamide is 0.05 to 3% by weight relative to the total weight of the cosmetic composition, 0.05 to 2% by weight, or 0.1 to 1% by weight, and the dibutylethylhexanoylglutamide may be 0.05 to 3% by weight, 0.05 to 2% by weight, or 0.1 to 1% by weight.

The wax may be 0.1 to 5% by weight, 0.3 to 4.5% by weight, 0.3 to 4% by weight, or 0.3 to 3% by weight, most preferably 0.5 to 2% by weight, based on the total weight of the cosmetic composition.

When the polyurethane-based polymer, the amino acid-based compound, and the wax are in the above weight ranges, the oil phase component can be easily gelled and the oil phase component can be stably dispersed in the aqueous phase without a surfactant.

In the water-in-water cosmetic composition of the present invention, the aqueous phase may further include an aqueous phase thickener.

The aqueous phase thickener is cellulose gum, hydroxyethyl cellulose, gellan gum, hydroxypropyl starch phosphate, sodium polyacrylate starch, xanthan gum, hydroxyethyl acrylate / sodium acryloyl dimethyl taurate copolymer, It may include at least one selected from the group consisting of polyacrylate-13, acrylate/C10-30 alkylacrylate crosspolymer, carbomer, sodium polyacrylate, and sodium acrylate copolymer, preferably xanthan gum or It may be an acrylate/C10-30 alkylacrylate crosspolymer, more preferably a combination of xanthan gum and acrylate/C10-30 alkylacrylate crosspolymer.

The water phase thickener may be 0.01 to 2% by weight, 0.03 to 1.5% by weight, or 0.05 to 0.5% by weight based on the total weight of the cosmetic composition. Preferably, when the aqueous phase thickener includes xanthan gum, acrylate/C10-30 alkylacrylate crosspolymer, or a combination thereof, the xanthan gum may be 0.01 to 1% by weight, or 0.01 to 0.5% by weight, and acrylic rate/C10-30 alkylacrylate crosspolymer may be 0.01 to 1 weight percent, or 0.05 to 0.5 weight percent.

Here, when the xanthan gum or acrylate/C10-30 alkylacrylate crosspolymer is included in an amount of less than 0.01% by weight, an appropriate thickening effect cannot be expected, and when it is included in an amount of more than 1% by weight, the viscosity of the aqueous phase becomes too high. There is a disadvantage that the feeling of use of the contents becomes stiff.

In the oil-in-water cosmetic composition of the present invention, oil gelled by an oil gelling agent including a polyurethane-based polymer, an amino acid-based compound, and wax is absorbed by inorganic particles, and the gelled oil absorbed by the inorganic particles is absorbed by an aqueous phase thickener. It can be distributed over the water phase where the network is formed.

The network may include a chain structure of a three-dimensional network. Since the aqueous phase thickener is a polymer component, these polymers have a high molecular weight and can form a long chain structure of a three-dimensional network in which chains are entangled like a net.

The oil-in-water cosmetic composition of the present invention may include an oil phase part containing an oil gelling agent, oil and inorganic particles; and an aqueous phase part containing a water phase thickener, a humectant, a preservative and a neutralizing agent.

The moisturizing agent, preservative, neutralizing agent and fragrance may be used without limitation as long as they are commonly used in cosmetic compositions.

The moisturizer may include at least one of glycerin, butylene glycol, and glycereth-26, and moisturizers known in the art may be used without limitation. The humectant may be 0.1 to 10% by weight, 1 to 8% by weight, or 1 to 5% by weight based on the total weight of the cosmetic composition.

The preservative may be hydroxyacetophenone, but any preservative known in the art may be used without limitation.

The neutralizing agent may be at least one neutralizing agent selected from the group consisting of potassium hydroxide, sodium hydroxide, magnesium hydroxide, triethanolamine, tromethamine, arginine, and aminomethyl propanol, but known in the art A neutralizing agent may be used without limitation. The neutralizer may be 0.01 to 0.5% by weight, 0.01 to 0.4% by weight, or 0.05 to 0.3% by weight based on the total weight of the cosmetic composition.

The oil-in-water cosmetic composition may further include an additive including a fragrance.

In one aspect of the present invention, the oil phase part may be included in 15 to 50% by weight based on the total weight of the cosmetic composition, and the aqueous phase part may be included in 50 to 85% by weight based on the total weight of the cosmetic composition.

In the water-in-water cosmetic composition of the present invention, the gelled oil can be dispersed in the aqueous phase by an oil gelling agent without a surfactant, and the inorganic particles absorbing the gelled oil can stably and finely disperse the gelled oil in the aqueous phase. there is.

In one aspect of the present invention, the oil may be included in 1 to 50% by weight, 5 to 40% by weight or 10 to 30% by weight based on the total weight of the cosmetic composition. When the oil is included in less than 1% by weight, an even distribution of the oil cannot be described as a whole, and when it is included in more than 50% by weight, there is a disadvantage in that the stability of the prepared contents becomes unstable.

The oil may include one or more selected from the group consisting of vegetable oils, mineral oils, hydrocarbon-based oils, ester-based oils, silicone oils, and synthetic oils, and is not limited to those oils commonly used in cosmetics. It doesn't work.

In one embodiment of the present invention, the oil is a hydrocarbon-based oil containing cetylethylhexanoate or 2-octyldodecanol; Hydrogenated polyisobutene, caprylic/capric triglyceride, C12-15 alcohols benzoate, isopropyl palmitate, 2-octyldodecyl myristate, isopropyl myristate or butyloctyl salicylate Ester-based oil containing; vegetable oils including castor oil, olive oil or jojoba oil; animal oils including horse fat, mink oil, or egg yolk oil; Mineral oil, including mineral oil, isododecane, polybutene or petrolatum; And at least one selected from the group consisting of silicone oils including phenyltrimethicone, cyclomethicone, or dimethicone may be used.

Synthetic oils may include sunscreens in addition to ether or ester-based oils.

In a most preferred aspect of the present invention, the present invention is an oil gelation comprising HDI/trimethylolhexyllactone crosspolymer, dibutyllauroylglutamide, dibutylethylhexanoylglutamide and microcrystalline wax Provides an oil-in-water cosmetic composition in which zero-gelled oil is absorbed by silica.

In addition, the present invention provides a method for producing an oil-in-water cosmetic composition.

Specifically, the production method of the present invention comprises the steps of (A) preparing a first aqueous phase portion comprising an aqueous phase thickener; (B) an oil gelling agent including a polyurethane-based polymer, an amino acid-based compound, and a wax; Preparing an oil phase by mixing inorganic particles and oil; and (C) stirring and mixing the first water phase part and the oil phase part.

Step (A) may be a step of preparing a first aqueous phase portion by mixing an aqueous phase thickener, a humectant, and a preservative, and more specifically, step (A) mixes an aqueous phase thickener, a humectant, and a preservative to form 1,000 to 3,000 rpm for 3 to 15 minutes by mixing and stirring to prepare the first water phase part. More specifically, after dispersing the water phase thickener in purified water, a moisturizer and a preservative are mixed to 60 to 90 ° C., preferably may be a step of preparing a first water phase portion by uniformly mixing and stirring at 70 to 80 ° C. at a speed of 1,000 to 3,000 rpm, preferably 1,500 to 2,000 rpm for 3 to 15 minutes, preferably 5 to 10 minutes.

In the step (B), a polyurethane-based polymer, an amino acid-based compound and an oil gelling agent including a wax, inorganic particles, and oil are mixed and heated and stirred at 60 to 150 ° C., preferably 80 to 120 ° C. to prepare an oil phase part may be a step.

In step (C), the first aqueous phase prepared in step (A) and the oil phase prepared in step (B) are 1,500 to 3,000 rpm, preferably 2,000 to 2,500 rpm for 3 to 15 minutes, preferably Preferably, it may be a step of stirring and mixing for 5 to 10 minutes.

The manufacturing method of the present invention, after the steps (A) to (C), additionally, (D) introducing a second aqueous phase containing a neutralizing agent into the stirring mixture of (C) and mixing; and (E) introducing the additive part containing the fragrance into the mixture prepared in (D), mixing it, and then cooling it.

Specifically, in the step (D), the second aqueous phase containing the neutralizing agent is added to the stirring mixture of (C) at a speed of 1,500 to 3,000 rpm, preferably 2,000 to 2,500 rpm for 3 to 15 minutes, preferably 5 It may be a step of mixing by stirring for about 10 minutes to 30 to 50°C, preferably cooling to a temperature of 40 to 45°C.

Specifically, the step (E) may be a step of adding and mixing the additives containing the fragrance to the mixture prepared in (D), followed by cooling to a temperature of 20 to 40 ° C, preferably 30 to 35 ° C, , More specifically, in the step (E), the additive containing the fragrance was added to the mixture prepared in (D), mixed uniformly, and then added to a vacuum emulsification tank at a paddle mixer of 20 to 40 rpm, preferably 25 to 30 rpm. After stirring at a speed of 3 to 15 minutes, preferably 5 to 10 minutes, it may be a step of cooling to 30 to 35 ℃.

The solvent, preservative, humectant, fatty acid, nonionic surfactant, hydrogenated butene, pH adjusting agent, metal sequestering agent, and amphoteric surfactant used in the manufacturing method of the present invention are all described in the cosmetic composition for cleaning of the present invention. It's like a bar.

In addition, the oil-in-water cosmetic composition of the present invention may be in the form of basic cosmetics such as toner, lotion, essence, cream, sun lotion, and sunscreen, and makeup cosmetics such as lipstick, lip gloss, lip tint, primer, foundation, and base.

Hereinafter, the present invention will be described in more detail through examples and the like according to the present invention, but the scope of the present invention is not limited by the examples presented below.

Example

<Examples 1 to 3>

The water phase parts (A) and (C), the oil phase part (B) and the additive part (D) were mixed according to the composition shown in Table 1, and the manufacturing method is as follows.

(1) The water phase part (A) was put into a vacuum emulsification tank capable of temperature control and stirring, and while maintaining the temperature at 70 to 80 ° C., it was uniformly mixed by stirring for 5 to 10 minutes at a speed of 1,500 to 2,000 rpm with a homomixer. .

(2) The oil phase portion (B) was put into an oil phase dissolving tank capable of stirring, and heated and stirred at 80 to 120 ° C. to mix evenly.

(3) The prepared oil phase part of the oil phase dissolving tank was put into the water phase part of the vacuum emulsification tank and mixed by stirring for 5 to 10 minutes at a speed of 2,000 to 2,500 rpm with a homo mixer.

(4) The water phase part (C) was put into a vacuum emulsification tank, stirred and mixed for 5 to 10 minutes at a speed of 2,000 to 2,500 rpm with a homo mixer, and then cooled to 40 to 45 ° C.

(5) The additive part (D) was added to a vacuum emulsification tank, mixed uniformly, added to a vacuum emulsification tank, stirred with a paddle mixer at a speed of 25 to 30 rpm for 5 to 10 minutes, and then cooled to 30 to 35 ° C. The water-in-water cosmetic compositions of 1 to 3 were prepared.

Phase Ingredients (% by weight) Example 1 Example 2 Example 3 Prime Minister (A) Purified water 75.32 65.69 54.31 Butylene Glycol 3.00 3.00 3.00 preservative 0.50 0.50 0.50 xanthan gum 0.05 0.10 0.15 Acrylates/C10-30 Alkyl Acrylate Crosspolymer 0.10 0.20 0.30 Paid part (B) Hydrogenated Polyisobutene 5.00 7.00 9.00 Caprylic/Capric Triglyceride 5.00 7.00 9.00 Cetylethylhexanoate 5.00 7.00 9.00 HDI/trimethylolhexyllactone crosspolymer 0.05 0.15 0.30 Dibutyllauroyl Glutamide 0.10 0.50 1.00 Dibutylethylhexanoylglutamide 0.10 0.50 1.00 microcrystalline wax 0.50 1.00 2.00 silica 3.00 5.00 8.00 Prime Minister (C) Purified water 2.00 2.00 2.00 tromethamine 0.08 0.16 0.24 Additive part (D) Spices 0.20 0.20 0.20

<Comparative Examples 1 and 2>

As shown in Table 2 below, in the oil phase part (B) of <Examples 1 to 3>, 4 types of oil gelling agents (HDI/trimethylolhexyllactone crosspolymer, dibutyllauroylglutamide, dibutylethyl Hexanoylglutamide and microcrystalline wax) and the cosmetic composition of Comparative Examples 1 and 2 in the same manner as the cosmetic composition of Examples 1 to 3, except for using polysorbate 60, a surfactant other than silica. was manufactured.

Phase Ingredients (% by weight) Comparative Example 1 Comparative Example 2 Prime Minister (A) Purified water 78.07 70.84 Butylene Glycol 3.00 3.00 preservative 0.50 0.50 xanthan gum 0.05 0.10 Acrylates/C10-30 Alkyl Acrylate Crosspolymer 0.10 0.20 Paid part (B) Hydrogenated Polyisobutene 5.00 7.00 Caprylic/Capric Triglyceride 5.00 7.00 Cetylethylhexanoate 5.00 7.00 Polysorbate 60 1.00 2.00 Prime Minister (C) Purified water 2.00 2.00 tromethamine 0.08 0.16 Additive part (D) Spices 0.20 0.20

<Test Example 1> Particle comparison test

The cosmetic composition of the present invention prepared in Example 1 and the cosmetic composition of Comparative Example 1 were compared and evaluated for particle shape and size using an optical microscope (BX53F2, Olympus, Japan). The results are shown in Figure 1 and Table 3 below.

sample Particle size (㎛) Average (μm) Example 1 4.48 8.18 6.72 5.33 7.39 6.42 Comparative Example 1 3.55 3.64 4.04 4.15 3.78 3.83

As a result of comparing and evaluating the shape and size of the particles, Comparative Example 1 containing the surfactant has small and dense particles, but in the case of Example 1 containing no surfactant, the particles are relatively large and dense It can also be confirmed that the shape is lower than that of Comparative Example 1. The results of Example 1 can be analyzed as a phenomenon caused by the absence of a surfactant, and when the cosmetic is applied to the skin, the particles are large and stable, so the visually transparent effect, immediate supply of moisture to the skin, and a fresh and moist feeling of use are realized. do.

<Test Example 2> Skin moisturizing test

In order to find out the effect of improving the skin moisturizing power of the cosmetic of the present invention, an experiment was conducted as follows. 40 people in their 20s to 50s without skin disease were divided into 2 groups of 20 people per group, and the cosmetic composition of the present invention prepared in Example 1 and the cosmetic composition of Comparative Example 1 were administered daily to the test subjects in each group. It was applied to the face and forearm for one month each time. Before starting the application in advance, the skin conductivity was measured using a Corneometer (CM820 courage, Khazaka electronic GmbH, Germany) under constant temperature and humidity conditions (24 degrees, 40% humidity), and the basic value was taken, and after 1 week, 2 weeks, and 4 weeks After the skin conductance was measured, the rate of increase was evaluated. The results are shown in Table 4 below.

sample 1 week later 2 weeks later 4 weeks later Example 1 57 60 58 Comparative Example 1 23 21 22

As shown in the results of Table 4, in the case of Example 1, which is the cosmetic of the present invention, the skin conductivity increase rate was very excellent compared to Comparative Example 1. That is, it was found that the cosmetic composition of the present invention has an excellent skin moisturizing effect.

<Test Example 3> Sensory evaluation

In order to find out the skin condition improvement effect of the cosmetic composition of the present invention, an experiment was conducted as follows. 50 people in their 20s to 50s without skin disease were divided into 5 groups of 10 people per group, and the cosmetic composition of the present invention prepared in Examples 1 to 3 and Comparative Examples 1 and 2 for each group of test subjects The cosmetic composition was applied to the face and forearm twice daily for one month. For each item of itching, redness, skin tightness, and dryness change, the satisfaction with the effect of the product was divided into 1 to 5 points (the higher the number, the higher the satisfaction), and the results are shown in Table 5 below. was

sample Satisfaction (average score) itching improvement reddening improvement skin tightening improvement improve dryness Example 1 4.6 4.5 4.4 4.3 Example 2 4.5 4.6 4.7 4.8 Example 3 4.3 4.2 4.6 4.5 Comparative Example 1 2.7 2.6 3.2 3.1 Comparative Example 2 2.5 2.7 3.2 3.3

As shown in the results of Table 5, the cosmetic compositions of the present invention, Examples 1 to 3, are superior to the cosmetic compositions of Comparative Examples 1 and 2 in improving itching, redness, skin tightening, and dryness. In addition, the finish of Examples 1 to 3 was almost similar, but Example 2 showed the best results in improving redness, skin tightening, and dryness, so that Example 2 was applied visually transparently. The effect and moist feeling of use were the most excellent.

However, Comparative Examples 1 and 2 both had good emulsifying power, but the feeling of use was stiff and dry, and there was no phenomenon that seemed to be applied visually transparently.

Claims (17)

oil; oil gelling agents including polyurethane-based polymers, glutamide-based compounds, and waxes; and inorganic particles;
The oil gelled by the oil gelling agent is absorbed by inorganic particles, and the gelled oil absorbed by the inorganic particles is dispersed in the aqueous phase without a surfactant,
The polyurethane-based polymer is HDI/trimethylolhexyllactone crosspolymer; and at least one oil-in-water cosmetic composition selected from the group consisting of HDI/PPG/polycaprolactone crosspolymer. delete According to claim 1,
The glutamide-based compound is dibutyllauroylglutamide, dibutylethylhexanoylglutamide, or a combination thereof in the oil-in-water cosmetic composition. According to claim 1,
The wax is ceresin wax, polyethylene wax, microcrystalline wax, paraffin wax, mineral wax including ozokerite, or vegetable wax including carnauba wax and candelilla wax. At least one oil-in-water cosmetic composition selected from the group consisting of: According to claim 1,
The inorganic particles are selected from the group consisting of silica, mica, sericite, titanium dioxide, iron oxide, zinc oxide, synthetic mica, alumina, boron nitride, polymethyl methacrylate, polymethylsilsesquioxane and polypropylsilsesquioxane. At least one selected oil-in-water cosmetic composition. According to claim 1,
The oil-gelling agent is an oil-in-water cosmetic composition of 0.1 to 15% by weight relative to the total weight of the cosmetic composition. According to claim 1,
The polyurethane-based polymer is 0.01 to 1% by weight based on the total weight of the cosmetic composition, the glutamide-based compound is 0.05 to 5% by weight based on the total weight of the cosmetic composition, and the wax is 0.1 to 5% by weight based on the total weight of the cosmetic composition Water-type cosmetic composition. According to claim 1,
The inorganic particles are 1 to 10% by weight based on the total weight of the cosmetic composition in water-type cosmetic composition. delete According to claim 1,
The water-in-water cosmetic composition further comprises an aqueous phase thickener. According to claim 10,
The aqueous phase thickener is cellulose gum, hydroxyethyl cellulose, gellan gum, hydroxypropyl starch phosphate, sodium polyacrylate starch, xanthan gum, hydroxyethyl acrylate / sodium acryloyl dimethyl taurate copolymer, An oil-in-water cosmetic composition comprising at least one selected from the group consisting of polyacrylate-13, acrylate/C10-30 alkylacrylate crosspolymer, carbomer, sodium polyacrylate and sodium acrylate copolymer. According to claim 10,
An oil-in-water cosmetic composition in which the gelled oil absorbed by the inorganic particles is dispersed in an aqueous phase in which a network comprising a three-dimensional network chain structure is formed by an aqueous phase thickener. According to claim 1,
The polyurethane-based polymer is HDI/trimethylolhexyllactone crosspolymer, the glutamide-based compounds are dibutyllauroylglutamide and dibutylethylhexanoylglutamide, and the wax is microcrystalline wax , The inorganic particles are silica oil-in-water cosmetic composition. According to claim 1,
The oil is an oil-in-water cosmetic composition comprising at least one selected from the group selected from vegetable oils, mineral oils, hydrocarbon oils, ester oils, silicone oils and synthetic oils. A method for producing an oil-in-water cosmetic composition according to claim 1, comprising the following steps:
(A) preparing a first aqueous phase portion comprising an aqueous phase thickener;
(B) an oil gelling agent including a polyurethane-based polymer, a glutamide-based compound, and a wax; preparing an oil phase portion by stirring and mixing inorganic particles and oil; and
(C) stirring and mixing the first water phase part and the oil phase part. According to claim 15,
A method for producing an oil-in-water cosmetic composition, characterized in that it further comprises the following steps after the steps (A) to (C):
(D) introducing a second aqueous phase portion containing a neutralizing agent into the stirred mixture of (C) and mixing; and
(E) Adding an additive part containing a fragrance to the mixture prepared in (D), mixing, and then cooling. The method for preparing an oil-in-water cosmetic composition according to claim 15, comprising the following steps:
(A) mixing and stirring an aqueous phase thickener, a humectant and a preservative at 60 to 90° C. at a speed of 1,000 to 3,000 rpm for 3 to 15 minutes to prepare a first aqueous phase part;
(B) an oil gelling agent including a polyurethane-based polymer, a glutamide-based compound, and a wax; Preparing an oil phase by mixing inorganic particles and oil and stirring and mixing at 60 to 150 ° C.; and
(C) stirring and mixing the first water phase part and the oil phase part at a speed of 1,500 to 3,000 rpm for 3 to 15 minutes.