KR101877805B1 - Cosmetic composition for sunscreening gel comprising beads containing UV abosorbants or sunscreen - Google Patents

Abstract

The present invention relates to a cosmetic composition for an ultraviolet blocking type of an underwater sunlight in which an ultraviolet screening agent or an absorbent agent having a high polarity and high polarity is used as a bead in an aqueous phase using a high alcohol and a fatty acid, Which is capable of simultaneously realizing the ultraviolet blocking index of the water-based ultraviolet screening agent, and securing the water resistance which is hard to be exhibited by the underwater type ultraviolet screening agent. The present invention also relates to a composition of a unique external appearance of a gel-type formulation, which forms an oil-like bead of a visible size in a water-in-oil form, thereby differentiating it from existing water-based products.

Description

TECHNICAL FIELD [0001] The present invention relates to a cosmetic composition for sunscreening gel containing beads containing ultraviolet absorbers or blocking agents,

The present invention relates to a cosmetic composition for protecting ultraviolet rays, and more particularly, to a cosmetic composition for protecting ultraviolet rays, and more particularly, to a cosmetic composition containing a bead containing a high content of ultraviolet absorber or blocking agent using a high alcohol and a fatty acid, And more particularly to a cosmetic composition for cosmetics.

Consumers are increasingly aware of the necessity of ultraviolet protection in everyday life, not only in summer, sports, and leisure activities. Recently, global climate change has transformed Korea into a sub-tropical climate. The demand for line products is increasing. Among the types of cosmetics, light, neat formulations include gels, sprays, and skins. However, it is difficult to contain a sufficient quantity of ultraviolet absorbers or blocking agents while keeping the formulations in light of the characteristics of the formulations. As the content of ultraviolet absorbers and blockers increases It was difficult to realize the preemptive feeling of light feeling due to the tendency to feel heavy feeling. There are several types of gel-type products currently on the market, and they have a feeling of freshness and lightness, but the actual UV blocking index shows that all products are below the indicated index.

delete

delete

1. Korean Patent No. 10-0563583

Accordingly, the present inventors have made efforts to develop a formulation which can sufficiently contain an ultraviolet absorbent and an ultraviolet screening agent while having a fresh and light feel. As a result, it has been found that a beverage which can contain a high content of ultraviolet absorber or blocker using a high alcohol and a fatty acid without a surfactant It is possible to realize a refreshing feel, a high ultraviolet barrier property and a water resistance at the same time, and completed the present invention.

Accordingly, an object of the present invention is to provide a gel-type UV-blocking cosmetic composition for underwater which can realize a refreshing feeling of use, an improved ultraviolet shielding effect and a water resistance at the same time.

In order to achieve the above object, the present invention provides a cosmetic composition for underwater sun protection wherein an ultraviolet absorber or a blocking agent is formed in beads in the form of beads by using a higher alcohol and a fatty acid.

The cosmetic for ultraviolet screening according to the present invention stabilizes an ultraviolet screening agent or an absorbent having high polarity and being an oil-soluble component in the form of a bead without a surfactant, so that conventional techniques can simultaneously realize a high content of ultraviolet screening agent and a pleasant feeling It solved the problem that was difficult, and it was able to realize a refreshing feeling of lightness and an ultraviolet shielding index which was greatly improved compared with the conventional one. In addition, it is possible to secure the water resistance which was hard to be shown in most of the underwater type sunscreen agents. In addition, the present invention has the effect of obtaining a gel-type formulation having a unique appearance, which is different from conventional gelatinous products by forming an oil-like bead having a visible size in the aqueous phase within the formulation.

The present invention provides a cosmetic composition for underwater sun protection wherein a high-alcohol and a fatty acid are used to form an ultraviolet screening agent or an absorbent in beads in the form of a bead.

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

The higher alcohol used in the present invention may be selected from alcohols having 12 to 26 carbon atoms, and it is preferable to use a mixture of two or more kinds having different carbon numbers. More specifically, the higher alcohol may be at least one selected from the group consisting of behenyl alcohol, cetearyl alcohol, cetyl alcohol and stearyl alcohol, and preferably 1 to 3 selected from behenyl alcohol and cetearyl alcohol More than species can be used.

The fatty acid used in the present invention may be selected from the components which are in a solid state at room temperature, and preferably fatty acids having a melting point of 40 ° C or higher and 80 ° C or lower may be used. More specifically, stearic acid, behenic acid, And at least one selected from the group consisting of citric acid.

The higher alcohols and fatty acids have high melting points and are amphiphilic constituents having both oleophilic and hydrophilic moieties. Therefore, it is located at the interface between the hydrophilic components including ultraviolet absorber and blocking agent at a high temperature and the water phase, and becomes a solid state at a temperature below the melting point, thereby preventing lipophilic components from aggregating and coalescing, Allowing lipophilic components to remain in a bead form distributed throughout the water. In addition, when applying the cosmetic composition applied on the skin, the lipophilic component of the high-melting point lipophilic component forms a lipid component film on the skin, thereby preventing the ultraviolet screening agent or the absorbent agent from being washed away in water or sweat.

The ratio of the higher alcohol to the fatty acid is in the range of 4.5: 1 to 5.5: 1, preferably 5: 1, in order to stably form the protonated mixture beads. In addition, high-grade alcohol helps to form beads by mixing two or more different kinds of carbon.

In the present invention, the total content of the mixture of the higher alcohol and the fatty acid is effective for forming the pro-type mixture beads, preferably 2.0 to 3.0% by weight, including 1.0 to 5.0% by weight based on the total weight of the composition. When the content of the mixture is less than 1.0% by weight, the beverage can not be formed because the content of the higher alcohol and fatty acid which can be located at the interface is small. When the content of the mixture is more than 5.0% by weight, the content of the solid component is too large, It is not suitable for betting.

The size of the prochymous mixture beads in the formulation can be varied in size and is preferably characterized by a diameter of 0.1 mm to 5 mm. When the diameter is less than 0.1 mm, it is difficult to prevent agglomeration and coalescence of the oil-soluble component, and it is difficult to differentiate from the viewpoint of feeling and appearance when compared with general underwater type ultraviolet screening agents. When the diameter is 5 mm or more, it is not suitable for application as a cosmetic because the particle size is so large that it can not be smoothly and uniformly applied.

The ultraviolet absorber used in the present invention may be an ultraviolet absorber commonly used in the art, and more specifically, octyl methoxycinnamate and isoamyl-p-methoxy cinnamate cinnamate derivatives such as < RTI ID = 0.0 >methoxycinnamate; < / RTI > Salicylic acid derivatives such as butylmethoxy dibenzoylmethane, bis-ethylhexyloxylphenolmethoxy phenyl triazine, and octyl salicylate; PABA (paminobenzoicacid) derivatives; Benzophenones; And anthranilates may be used.

The ultraviolet ray absorbing agent may contain 5 to 50% by weight based on the total weight of the composition. When the ultraviolet ray absorbing agent is contained in an amount of less than 5% by weight, ultraviolet ray blocking effect is difficult to be expected. It is difficult to express feeling. More preferably, the ultraviolet absorber may contain 10 to 30% by weight.

In addition to ultraviolet absorbers, ultraviolet screening agents commonly used in the art may be used together. In general, the type of ultraviolet screening agent is a powdery form such as ZnO (zinc oxide), TiO ₂ (titanium dioxide), silicate and talc, and the content in the formulation is preferably less than 5% and should not exceed 10% . If it is more than 10%, it is difficult to formulate and the whitening phenomenon becomes severe when used.

In addition, one or more ultraviolet absorbers and blocking agents can be mixed in the formulation, and most cosmetic oil components are also applicable at the same time. In the cosmetic composition according to the present invention, the content of the ultraviolet absorber and the blocking agent is preferably 10.0 to 40.0% by weight based on the total weight of the composition.

A method for producing a bead including an ultraviolet absorber or a blocking agent including the above components is characterized in that the high-alcohol, fatty acid, ultraviolet absorber and other lipid components in the above ratios are heated and dissolved in a separate container at 70 to 80 DEG C and dispersed in a homogenizer To prepare a parent-type mixture. After heating the water phase to 65-75 ° C, the parent phase mixture is slowly added to the water phase to form particles of the parent phase mixture at 65-75 ° C through a homogenizer and cooled to room temperature using a chiller. Through such a process, a cosmetic composition for UV shielding containing a prochymous mixture bead containing the ultraviolet absorber according to the present invention can be obtained.

The cosmetic composition provided by the present invention may contain an aqueous thickener. By including a water-solubilizing agent, formulation stability can be improved by helping to prevent aggregation and aggregation of the pro-type mixture beads.

In addition, the cosmetic composition according to the present invention can be used by adjusting the water-soluble humectant, water-dispersing thickener, etc. commonly used as cosmetics according to the purpose and use of each product.

In the present invention, an ultraviolet absorber or a blocking agent is distributed in a bead form and dispersed in a water phase without using a surfactant by using a high-alcohol and a fatty acid, so that a cosmetic composition for protecting ultraviolet rays, which contains a high content of ultraviolet absorber and a blocking agent, to provide. In addition, unlike ordinary capsules, the pro-type bead particles formed in the present invention do not use an insoluble component, so that a foreign body feeling is not felt upon application to the skin. In addition, after the application, the higher alcohol and the fatty acid form a lipid film on the surface of the skin, so that the ultraviolet screening agent or the absorbent agent can have a water resistance that is not easily washed off by water or perspiration.

Hereinafter, the present invention will be described in more detail by way of examples and comparative examples, but the scope of the present invention is not necessarily limited to these examples.

[ Manufacturing example  1] Preparation of ultraviolet screening composition

Example 1 and Comparative Examples 1 and 2 of an underwater type emulsion ultraviolet screening formulation were prepared with the composition shown in Table 1 below (unit: wt%).

The example was designed to contain a high alcohol to fatty acid ratio of 5: 1 and a total weight of 2.0% according to the technique described above, including 22% of sunscreen and absorbent and no surfactant.

Comparative Example 1 was designed as a general type of water-in-oil type emulsion containing the same amount of ultraviolet screening agent and surfactant as in Example, and Comparative Example 2 had a level similar to that of Example 1 by including a smaller amount of ultraviolet screening agent and surfactant than Example 1 To show a light and refreshing feel. In Comparative Example 3, the same amount of the high melting point wax other than the wax proposed in this technique was used, and the surfactant was not included, while containing the same amount of the ultraviolet blocking agent as in Example 1.

In Example 1, the ratio of the higher alcohol and fatty acid of the present invention was set to 5: 1, and the total weight was 2.0%, and it was designed not to include a surfactant.

ingredient Example 1 Comparative Example 1 Comparative Example
2 Comparative Example
3 Oily component Behenyl alcohol 0.8 0 0 0 Cetearyl alcohol 0.2 0.5 0 0 Stearic acid 0.2 0.5 0 0 Microcrystalline wax 0 0 0 0.8 Beads wax 0 0 0 0.4 Octylmethoxy cinnamate 7 7 5 7 Octyl salicylate 5 5 0 5 Bisethylhexyloxyphenol methoxyphenyltriazine 6 6 0 6 TiO ₂ 4 4 One 4 FAGE -100 stearate 0 One 0.5 0 Polyglyceryl-3
Methylglucose distearate 0 One 0.5 0 Aqueous component Purified water To 100 To 100 To 100 To 100 EDTA-2Na 0.02 0.02 0.02 0.02 glycerin 5 5 5 5 Phenoxyethanol 0.3 0.3 0.3 0.3 Carbomer 0.2 0.2 0.2 0.2 Other ingredients corrector Suitable amount Suitable amount Suitable amount Suitable amount

<Manufacturing Method of Example 1 and Comparative Examples 1 to 4>

The oily components in Table 1 were heated to 75 DEG C to uniformly dissolve and mix. The aqueous components were heated to 70 DEG C to uniformly dissolve and mix, and the oily component mixture was added to the aqueous component mixture with stirring to form bead particles . Thereafter, the emulsion of the aqueous component and the oily component was stirred, and then a neutralizing agent was added thereto.

[ Test Example  1] Evaluation of long-term stability

In order to evaluate the stability and long-term stability of the composition according to the present invention, 60 ml of each of the compositions of Example 1 and Comparative Examples 1 to 3 of Preparation Example 1 were placed in a transparent plastic bottle having a capacity of 100 ml at 25 ° C and 45 ° C 4 weeks, and after 1 week and 4 weeks, the composition was observed and the stability of the formulation was evaluated. The results are shown in Table 2 below.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 25 ℃ (1 week) O O O X 25 ℃ (4 weeks) O O O X 45 ° C (1 week) O O O X 45 ° C (4 weeks) O △ O X

O: There was no separation between oil and water.

Δ: The oil phase and the water phase were slightly separated.

x: The oil phase and the water phase were clearly separated.

As shown in the results of Table 2, in the case of an underwater type composition containing an ultraviolet screening agent and an absorbent, it was difficult to obtain a high-melting point wax other than the wax proposed in the above description without a surfactant. This is because the proposed high alcohol and fatty acid species can be located at the interface between the oil phase and water phase due to the amphiphilic nature of not only a high melting point property but also a hydrophilic part and an oleophilic part at the same time, It can be seen that it was easy.

Also, even when a surfactant is included, the stability of the formulation becomes more difficult as the content of the ultraviolet screening agent or the absorbent increases, and as the content of the surfactant is increased, the feeling of use changes in a heavy direction. It can not be a desirable direction for realizing long-term stability at the same time.

[ Test Example  2] Sensory evaluation

The compositions of Example 1 and Comparative Examples 1 and 2 were evaluated for the presence or absence of beads and the feeling of lightness, moisture sensitivity, and feeling of use feeling when they were applied to the skin as a cosmetic composition for UV screening. In the case of Comparative Example 3, the stability was poor even at room temperature, and the formulations were separated and excluded from the sensory evaluation.

The evaluation was made on 10 persons who participated in the research and development for 3 years or more in the cosmetics industry, and the difference of feeling after application was judged on a scale of 10 points. The results are shown in Table 2 below. The higher the score, the better the lightness, moisture, and feelings of preference.

Evaluation items Example 1 Comparative Example 1 Comparative Example 2 Presence of beads U radish radish lightness 9.5 7.2 8.9      Moisture 9.6 7.4 7.6 Feeling feeling preference 9.3 7.1 8.4

From the results of Table 3, it can be seen that beads were formed only in Example 1 according to the present invention, and all three items were higher than Comparative Examples 1 and 2. In the case of Comparative Example 1 containing a surfactant, it was confirmed that it was difficult to exhibit a feeling of lightness and high feeling of moisture while containing the same amount of ultraviolet screening agent as in Example 1. In the case of Comparative Example 2 containing less ultraviolet screening agent than Example 1 Despite the inclusion of the surfactant, the lightness, moisture, and preference scores were lower than those of Example 1.

[ Test Example  3] Measurement of ultraviolet barrier index

In order to measure the UV-blocking index of Example 1 and Comparative Examples 1 and 2, the amount of ultraviolet light radiated to the test site on the left and right sides of the back except for the back of the back of 12 subjects composed of 6 males and 6 females was measured using the IL1733 radiation system Radiometer) and 20-100 mj / cm 2 using a SED 240 probe and irradiated with a solar simulator (81293, Xenon UV Lamp 1KW, unfiltered) lamp. Minimal Erythema Dosa (MED) was confirmed at 24 hours after UV irradiation. To confirm the ultraviolet blocking effect of the sample, the sample of Example 1 and Comparative Examples 1 and 2 were coated uniformly at a thickness of 2 쨉 l / cm 2 at a thickness of 2 쨉 l / And allowed to stand for 15 minutes to dry. Ultraviolet irradiation windows were attached and fixed to the sample application areas of Comparative Examples 1 and 2 and Formulation Example 1, and ultraviolet rays were irradiated to other portions except for the irradiation windows by cutting off ultraviolet rays using leather and a towel. SPF 50 based on MED of subject, SPF 15-40, expected sample, beginning with dose, gradually increasing UV dose. The minimum erythema was determined after 24 hours of ultraviolet irradiation, and the ultraviolet blocking effect was calculated according to the following equation (1). In Comparative Example 3, the stability was not ensured and ultraviolet blocking effect could not be measured.

The results of measurement of the ultraviolet blocking effect (SPF) of Example 1 and Comparative Examples 1 and 2 are shown in Table 5 below.

Test group Example Comparative Example 1 Comparative Example 2 Comparative Example 3 SPF (average) 35.1 34.8 7.3 -

The results of Tables 3 and 4 are summarized as follows. In Comparative Example 1, since it contains the same amount of ultraviolet screening agent as in Example 1, it exhibits a UV blocking index similar to that of Example 1, It does not show feeling as light as Example 1. In Comparative Example 2, although it has a feeling of lightness and feeling of moisture, it has a lower value than that of Example 1, and shows only a very small ultraviolet shielding effect of 1/5 level as compared with Example 1 because the content of the ultraviolet screening agent is small Could know.

[Test Example 4] Measurement of water resistance

In order to confirm whether the composition of the present invention is water resistant, the water resistance was measured according to the in vitro water resistance SPF measurement system of the sun protection agent of Korean Patent Laid-Open Publication No. 2006-0038518 and the SPF measurement method using the theory.

The composition of Example 1 and Comparative Examples 1 and 2 prepared in Preparation Example 1 was applied to a Vitro Skin (Bio Skin Plate, Beaulax, co., LTD) at 2 mg / cm 2, SPFdry and SPFwet were measured after inactivation after loss of sunscreen by SPFdry and immersion. Next, SPFdry and SPFwet are compared with each other, and water resistance is determined according to the following equation (2). Comparative Example 3 was excluded from the evaluation because the stability was not secured.

(Reference: Korean Patent Publication No. 2006-0038518, in vitro water resistance SPF measurement system of sunscreen agents and SPF measurement method using theory / IFSCC published paper "Alternative evaluation method in water resistant effect of sunscreen products")

Test group Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 % WRR 76 39 20 -

As shown in the results of Table 5, in the case of Example 1, the in-vitro SPF values before and after immersion in water were higher than those of Comparative Example 1 and Comparative Example 2 -vitro) SPF value, it can be confirmed that the water resistance is given.

Claims (11)

An ultraviolet absorber, or a sunscreen, or a mixture of said ultraviolet absorber and a sunscreen; And a mixture of higher alcohol and fatty acid,
Wherein the mixing ratio of the higher alcohol and the fatty acid is 4.5: 1 to 5.5: 1 on the basis of weight. delete delete The cosmetic composition according to claim 1, wherein the content of the mixture of the higher alcohol and the fatty acid is 1.0 to 5.0% by weight based on the total weight of the composition. The cosmetic composition according to claim 1 or 4, wherein the beads have a diameter ranging from 0.1 mm to 5 mm. The cosmetic composition according to claim 1 or 4, wherein the higher alcohol is at least one selected from the group consisting of behenyl alcohol, cetearyl alcohol, cetyl alcohol and stearyl alcohol. The cosmetic composition according to claim 1 or 4, wherein the fatty acid is at least one selected from the group consisting of stearic acid, behenic acid and palmitic acid. The cosmetic composition according to claim 1 or 4, wherein the content of the mixture of the ultraviolet absorber and the ultraviolet screening agent is 10.0 to 40.0% by weight based on the total weight of the composition. The cosmetic composition according to claim 1 or 4, wherein the composition is gel-type. 5. The composition of claim 1 or 4, wherein the UV absorber is selected from the group consisting of cinnamate derivatives such as octyl methoxycinnamate or isoamyl-p-methoxycinnamate; Salicylic acid derivatives such as butylmethoxy dibenzoylmethane, bis-ethylhexyloxylphenolmethoxy phenyl triazine or octyl salicylate; PABA (p-aminobenzoic acid) derivatives; Benzophenones; And anthranilates. &Lt; RTI ID = 0.0 &gt; 11. &lt; / RTI &gt; The cosmetic composition according to claim 1 or 4, wherein the content of the ultraviolet screening agent is more than 0% by weight and less than 5% by weight based on the total weight of the composition.