Oil-in-water type makeup cosmetic composition with strong water resistance

Abstract

The present invention relates to an oil-in-water type makeup cosmetic composition, and more particularly, to an oil-in-water type makeup cosmetic composition which is uniformly applied to the skin without jamming, fills fine lines, improves the moisture retention, and has excellent water resistance to impart strong makeup durability.

Description

Technical Field

[0001] The present invention relates to an oil-in-water color cosmetic composition. More specifically, the cosmetic composition can be evenly applied to the skin without causing powder to stick, fill fine lines, improve moisturizing power, and has excellent water resistance to make the makeup last longer. Background Art

[0002] Foundation, a representative skin makeup product used to cover skin blemishes and create an even skin tone, has fallen out of favor in recent years due to its poor feel. Most users complain that foundation makes the skin feel less breathable. In addition, excessive concealing power is far from the natural makeup that is one of the recent makeup trends, so it is gradually becoming less popular.

[0003] Following this trend, the new favorite basic product is brightening cream. Brightening cream is a color-adjusting cream that brightens the skin tone. It is transparent but not excessive, so it is currently chosen by many consumers. However, brightening cream also has fatal disadvantages. It will rub mud on the skin and dry it out. The covering power is weak. The floating makeup caused by drying out will cause serious wrinkles. This is mainly caused by insufficient moisture in the skin.

[0004] In particular, as a raw material to ensure the concealing power of color cosmetic compositions, titanium dioxide has strong water resistance. When dispersed in the water phase, the dispersion power is low, so it is not dispersed in the water phase as small particles, but exists as large particles, which leads to serious streaking phenomenon during application. Moreover, when a large amount is added to improve the concealing power, it will feel heavy and stuffy, and agglomerate with the water phase polymer to cause serious mud rubbing phenomenon. In order to improve the airtight feeling of titanium dioxide, show various feelings, correct skin texture, and give luster, pigments are used, but the use of such pigments has disadvantages, which causes dry skin by absorbing moisture in the skin.

[0005] Therefore, there is an urgent need to develop a product to improve the problems of the above-mentioned existing basic products, such as airtightness, mud rubbing phenomenon, dryness, weak concealing power, floating makeup, and wrinkle sticking. Summary of the invention

[0006] Technical issues

[0007] In order to solve the above problems, the present invention aims to provide an oil-in-water type makeup cosmetic composition having excellent moisture feeling, moisturizing power, water resistance and durability.

[0008] Technical Solution

[0009] In order to solve the above-mentioned shortcomings of titanium dioxide, the inventors have confirmed through research that by coating the surface of titanium dioxide with strong water resistance with a natural surfactant to improve its dispersibility in the aqueous phase, it can achieve the effect of uniform coating without powder sticking and filling fine lines when applied to the skin. In addition, by adding pigments coated with ceramides with excellent moisturizing power, the moisturizing power of the skin is improved, water loss is prevented, and the skin adheres quickly, thereby correcting the skin texture and maintaining the skin's luster and moisture.

[0010] In view of this, the present invention provides an oil-in-water type makeup cosmetic composition, comprising: titanium dioxide coated with a natural surfactant; and a pigment part.

[0011] The oil-in-water makeup cosmetic composition of the present invention is an oil-in-water dosage form with a high water content, exhibits excellent moisture feeling and refreshing spreadability, increases the moisturizing ability of the skin, prevents water loss, and quickly adheres to the skin, thereby correcting the skin texture and imparting luster, has strong water resistance, and can keep the skin moisturized.

[0012] In the present invention, the natural surfactant is one or more substances selected from disodium stearoyl glutamate, polyglyceryl-3-olive acid phosphate, polyglyceryl-3-cetostearyl olivetate, methyl glucose sesquistearate, polyglyceryl methyl glucose distearate, sucrose stearate, sucrose laurate and polyglyceryl-4-isostearate, preferably, disodium stearoyl glutamate.

[0013] In the present invention, the content of titanium dioxide coated with a natural surfactant is 10 to 15 wt %, preferably 11 to 14 wt %, more preferably 12 to 14 wt %, based on the total weight of the cosmetic composition.

[0014] In an embodiment of the present invention, before titanium dioxide is coated with a natural surfactant, it can be coated with aluminum hydroxide. In the process of coating titanium dioxide with the natural surfactant disodium stearoyl glutamate, titanium dioxide will be broken, but the agglomeration characteristics of titanium dioxide may cause it to reunite. In order to prevent this reunion, preferably, titanium dioxide is coated with aluminum hydroxide. The component ratio of titanium dioxide, disodium stearoyl glutamate and aluminum hydroxide constituting the aqueous phase part B according to an embodiment of the present invention can be 90 to 98:1 to 5:1 to 5.

[0015] In the present invention, the pigment portion may include a pigment coated with ceramide.

[0016] In the present invention, the ceramide may be a natural ceramide or a pseudo-ceramide.

[0017] As a term of the present invention, ceramide is a compound formed by the combination of a fatty acid and sphingosine or phytosphingosine, wherein the synthesis of ceramide-like compounds is mainly synthesized by the structure of combining saturated and unsaturated fatty chain compounds with sphingosine or phytosphingosine, or, as a starting material, a compound having aliphatic alcohol, amine and amide groups is used to replace sphingosine or phytosphingosine, and saturated and unsaturated fatty chain compounds are reacted to synthesize. Natural ceramides may be ceramide EOP, ceramide NG, ceramide NP, ceramide EOH, ceramide AG, ceramide AP and ceramide AH, and ceramide-like compounds may be phytoceramide, palmitoylceramide, stearoylceramide, deoxyphytantriol palmitamide MEA, hydroxypropyl bislauamide MEA, hydroxypropyl bisstearoyl amide MEA and hydroxypropyl bispalmitamide MEA. In the present invention, the most preferred ceramide may be hydroxypropyl bispalmitamide MEA.

[0018] In the present invention, the pigment may be mica, silica, boron nitride, nylon 12, methyl methacrylate cross-linked polymer, and synthetic fluorphlogopite.

[0019] In the present invention, the content of the pigment part is 5 to 15 wt %, preferably 7 to 13 wt %, more preferably 9 to 11 wt %, based on the total weight of the cosmetic composition.

[0020] In the present invention, the cosmetic composition may further comprise one or more cosmetic ingredients selected from ester oils, thickeners, colorants and moisturizers, but is not limited thereto, and any ingredient that can be used to prepare cosmetics using an emulsion cosmetic composition known in the art may be used.

[0021] In the present invention, the ester oil can be a combination of one or more selected from cetyl ethylhexanoate, diisostearyl malate, caprylic / capric triglyceride, isononyl isononanoate, ethylhexyl isononanoate, ethylhexyl palmitate, isostearyl isostearate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, octyldodecanol myristate, pentaerythritol tetraethylhexanoate, pentaerythritol tetraisostearate, isotridecanol isononanoate, triisostearate and squalane.

[0022] In the present invention, the moisturizer may be a combination of one or more selected from glycerin, butylene glycol, dipropylene glycol, pentylene glycol, propylene glycol, diglycerin, propylene glycol and glyceryl polyether-26.

[0023] In the present invention, the cosmetic composition further includes a surfactant, and the content of the surfactant may be 0.1 to 1 wt % based on the total weight of the composition. If the content of the surfactant exceeds 1 wt %, a problem of reduced water resistance may occur.

[0024] In the present invention, the surfactant is one or more substances selected from polysorbate 60, polysorbate 80, PEG-40 hydrogenated castor oil and Oleth-10, preferably, polysorbate 60.

[0025] In the present invention, the cosmetic composition can be used to prepare foundation, primer, concealer powder, BB cream, CC cream, cushion powder, contour cream, eye shadow, blush, highlighter powder or sunscreen products. The above disclosed products can be prepared according to known methods.

[0026] Beneficial Effects

[0027] The oil-in-water makeup cosmetic composition according to the present invention is not easily washed off by sweat due to its water resistance, can maintain efficacy, and has excellent moisture feeling, moisturizing power, water resistance and durability. DETAILED DESCRIPTION

[0028] Below, the embodiments of the present invention will be described in more detail. However, the present invention is not limited to the embodiments described in this specification, and can be implemented in other forms. It should be understood that the purpose of this specification providing embodiments is to make the disclosure more thorough and complete, and to fully convey the concept of the present invention to those skilled in the art.

[0029] [Preparation Example 1] Preparation of cosmetics of comparative examples and examples using water phase components as variables

[0030] According to the formulation shown in Table 1 below and by the following preparation method, Example 1 containing main ingredients (titanium dioxide, disodium stearoyl glutamate, aluminum hydroxide) and Comparative Examples 1 to 4 not containing the main ingredients were prepared.

[0031] <Preparation of cosmetics>

[0032] 1. Weigh the aqueous phase A, add it to an emulsifier, heat it to 65°C to 75°C, and then stir it for 10 minutes to make it evenly dispersed.

[0033] 2. Weigh the aqueous phase B, process it on a three-stage roller mill three times, then add it to the emulsification tank and mix and disperse it evenly.

[0034] 3. After confirming that the water phase B is completely dispersed, mix and disperse the pigment evenly.

[0035] 4. The oil phase is mixed in another dissolution tank and then heated to 65°C to 75°C.

[0036] 5. The heated oil phase was added to the emulsification tank and stirred at 3,400 to 3,600 rpm for 5 minutes using a homomixer to emulsify the mixture.

[0037] 6. Cool to 30°C.

[0038]

Table 1

[0039]

[0040] [Experimental Example 1] Observation of the appearance of the composition

[0041] The appearance of the cosmetic compositions of the examples and comparative examples prepared in the preparation example 1 was observed immediately after preparation. The observation results are shown in Table 2.

[0042]

Table 2

[0043] result Example 1 No color band, smooth frosting Comparative Example 1 More severe white and red bands Comparative Example 2 More severe white bands with fluffy shapes Comparative Example 3 There is a slight red band and severe clumping during coating Comparative Example 4 More severe white and red bands with fluffy shapes

[0044] Example 1 comprising the main ingredient showed the best results in appearance.

[0045] [Experimental Example 2] Sensory evaluation of skin improvement

[0046] The cosmetic compositions of the examples and comparative examples prepared in the preparation example 1 were applied to the face of the test subjects, and then the skin improvement sensory evaluation (smooth skin appearance, adherence, moisturizing power) was performed according to the following evaluation criteria. The results are shown in Table 3 below.

[0047]

Table 3

[0048] Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Concealer 5.0 4.8 3.1 2.5 4.0 Smooth skin appearance 4.9 3.2 1.5 2.0 3.6 Adhesion 4.7 3.1 2.8 2.6 3.4 Moisturizing power 4.8 2.1 3.0 3.1 4.0

[0049] <Evaluation criteria: No effect = 1, Slightly = 2, Average = 3, Good = 4, Very good = 5>

[0050] Overall, Example 1, which contained the main ingredient, gave the best results.

[0051] [Preparation Example 2] Preparation of cosmetics of comparative examples and examples using pigment components as variables

[0052] By the same preparation method as that of Preparation Example 1, Example 1 having the formulation shown in Table 4 below and Comparative Examples 5 to 7 having different pigment part components were prepared.

[0053]

Table 4

[0054]

[0055] [Experimental Example 3] Water resistance evaluation

[0056] Water resistance (waterproofing) is the factor that prevents makeup from coming off due to daily activities, sweat or water after application, and is related to the durability of makeup.

[0057] The water resistance (waterproofing) evaluation method is as follows: use a water tank to immerse the test part in water twice for 20 minutes each time, for a total of 40 minutes, and then measure the degree of change in the lightness measurement value of the skin surface to determine whether the makeup is maintained. At this time, if the degree of change in the lightness measurement value remains above 50%, it is judged to be water-resistant.

[0058] The test method is as follows: wash the forearm with a detergent, and after removing the moisture for 30 minutes, mark a 4cm×3cm rectangular test area on the subject's forearm, and use JANUS to take a photo of the skin surface before using the product. The subject applies 2mg / cm2 of the test substance on the divided test area, and then waits for a certain time (3 to 10 minutes) until the product is fully absorbed. After using the product, use JANUS to take a photo of the skin surface. Completely immerse the forearm coated with the sample in an artificial water tank and leave it for 20 minutes. Take the forearm out of the water tank for 20 minutes and dry naturally. Soak the forearm in water again for 20 minutes. Take the forearm out of the water tank and dry naturally for at least 15 minutes. Use JANUS to take a photo of the skin surface.

[0059] The photographs were analyzed using an image analyzer (Image-pro plus, USA). After specifying AOI (Area Of Interest) of the same size, the water resistance evaluation degree was derived as a percentage (%) value as shown below.

[0060] X - L value of the test site before using the product

[0061] Y-L value of the test area after using the product for 10 minutes

[0062] Z1-L value of the test part after immersion in the water tank for 20 minutes

[0063] Z2-L value of the test part after immersion in the water tank for a total of 40 minutes

[0064] Water resistance after first immersion (%) = (X-Z1 / XY)*100

[0065] Water resistance after the second immersion (%) = (X-Z2 / XY)*100

[0066] At this time, if the water resistance (%) value is 50 or more, it is judged that the sample has water resistance.

[0067] The water resistance test results are shown in Table 5 below.

[0068]

Table 5

[0069]

[0070]

[0071] From the water resistance test results, it can be seen that the water resistance of Example 1 is significantly higher than that of the comparative example.

[0072] [Experimental Example 4] Evaluation of Moisturizing Power and Durability

[0073] The skin moisture content was measured using an Aphrodite moisture meter, which is used to measure the moisture content in the stratum corneum.

[0074] The stratum corneum of the epidermis has a high resistance to electricity, so when AC is applied when it contains water, the resistance decreases. Based on this principle, the moisture content is indicated by measuring capacitance. Therefore, a dry stratum corneum exhibits weak conductivity, while a moist stratum corneum exhibits strong conductivity due to the increase in dielectric constant.

[0075] Set the test area (5cm×4cm) and apply 2mg / cm 2 After the samples were taken, the transepidermal moisture content was measured after 30 minutes, 3 hours, and 6 hours, and the result values ​​were analyzed.

[0076] The evaluation results of moisturizing power and lasting power are shown in Table 6 below.

[0077]

Table 6

[0078] Before coating 30 minutes after application 3 hours after coating 6 hours after coating Example 1 0％ 67.1％ 76.2％ 58.1％ Comparative Example 5 0％ 64.8％ 63.6％ 44.3％ Comparative Example 6 0％ 58.2％ 57.1％ 43.2％ Comparative Example 7 0％ 58.4％ 49.7％ 41.0％

[0079] From the evaluation results of moisturizing power and durability, it can be seen that, similar to the water resistance test results, the result of Example 1 is the best. In particular, unlike the comparative example, the moisturizing power of the example 3 hours after application is better than that immediately after application, and has the best moisturizing effect.

[0080] Although the present invention has been described above in conjunction with the embodiments of the present invention, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention as set forth in the appended claims. Therefore, if the modified implementation substantially includes the features described in the claims of the present invention, it should be considered to belong to the technical scope of the present invention.

Claims

1. An oil-in-water makeup cosmetic composition, comprising: Titanium dioxide coated with a natural surfactant; and a pigment portion.

2. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The natural surfactant is one or more substances selected from disodium stearoyl glutamate, polyglyceryl-3-olive acid phosphate, polyglyceryl-3-cetostearyl ether olive acid ester, methyl glucose sesquistearate, polyglyceryl methyl glucose distearate, sucrose stearate, sucrose laurate and polyglyceryl-4-isostearate.

3. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The content of the titanium dioxide coated with the natural surfactant is 10 wt % to 15 wt % based on the total weight of the cosmetic composition.

4. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The pigment portion includes a pigment coated with ceramide.

5. The oil-in-water makeup cosmetic composition according to claim 4, characterized in that: The ceramide is a natural ceramide or a ceramide-like ceramide.

6. The oil-in-water makeup cosmetic composition according to claim 5, characterized in that: The ceramide-like substance is one or more substances selected from phytoceramide, palmitoyl ceramide, stearoyl ceramide, deoxyphytantriol palmitamide MEA, hydroxypropyl bislauramide MEA, hydroxypropyl bisstearoyl ceramide MEA and hydroxypropyl bispalmitamide MEA.

7. The oil-in-water makeup cosmetic composition according to claim 4, characterized in that: The pigment is one or more substances selected from mica, silicon dioxide, boron nitride, nylon 12, methyl methacrylate cross-linked polymer and synthetic fluorphlogopite.

8. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The pigment part may be contained in an amount of 5 to 15 wt % based on the total weight of the cosmetic composition.

9. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The cosmetic composition further comprises one or more cosmetic ingredients selected from the group consisting of a thickener, a colorant and a moisturizer.

10. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The cosmetic composition further comprises a surfactant, and the content of the surfactant is 0.1 wt % to 1 wt % based on the total weight of the cosmetic composition.

11. The oil-in-water makeup cosmetic composition according to claim 10, characterized in that: The surfactant is one or more substances selected from polysorbate 60, polysorbate 80, PEG-40 hydrogenated castor oil and oleth-10.

12. The oil-in-water makeup cosmetic composition according to claim 1, characterized in that: The cosmetic composition is used for preparing foundation, primer, concealer powder, BB cream, CC cream, air cushion powder, contour cream, eye shadow, blush, highlighter powder or sunscreen product.

Images