KR102286079B1 - Cosmetic composition for transparent gel lips - Google Patents

Abstract

It relates to a cosmetic composition for transparent gel lips comprising a gelling agent and citric acid, and provides a cosmetic composition that prevents coloring of the gelling agent, maintains a transparent appearance, and has excellent color development and coloring power.

Description

Cosmetic composition for transparent gel lips

It relates to a cosmetic composition for transparent gel lips.

There are various products for lip makeup, such as lipstick, lip gloss, lip tint, and lip lacquer. Similar to lip gloss, most lip tints have a brush in the container, and a stick type like lipstick has been developed to make it easier to use. Lip tint covers the lip color and helps to develop natural color. It is used for basic lip makeup because the color lasts for a long time and is not easily erased even after eating.

A general tint colorant dye is developed by pH, and it is known that it is generally expressed and developed at a pH of 4.5 or higher. Therefore, when it comes into contact with the skin, it is expressed with the moisture in the skin and the color is colored.

When a tint colorant is applied to a general gel, the colorant is expressed on the appearance of a transparent gel by a change in pH, which is not pretty in terms of aesthetics and has little reversal effect, which leads to lower consumer preference.

Under this technical background, research on transparent gel lip tint (Korean Patent Registration No. 10-1839763) is in progress, but it is still incomplete.

One aspect is to provide a cosmetic composition for transparent gel lips comprising a gelling agent and citric acid.

One aspect provides a cosmetic composition for transparent gel lips comprising a gelling agent and citric acid.

In one embodiment, the gelling agent is a material that forms a clear and transparent gel, and may be a mixture of dibutyl lauroyl glutamide (Dibutyl Lauroyl Glutamide) and dibutyl ethylhexanoyl glutamide (Dibutyl Ethylhexanoyl Glutamide). The gelling agent may be included in 1 to 15, 1 to 10, 5 to 10% by weight based on the total weight of the cosmetic composition.

The mixing weight ratio of dibutyllauroylglutamide and dibutylethylhexanoylglutamide, which are components of the gelling agent, is 1:1 to 5:1, 1:1 to 4:1, 1:1 to 3:1 , 1:1 to 2:1, preferably 1:1 to 1.5:1.

When the mixing weight ratio is out of the range, the melting point becomes too high, which may cause side effects such as discoloration and discoloration of other oils used for lipstick manufacturing and molding.

In one embodiment, the citric acid provides a cosmetic composition for lips that prevents discoloration of the transparent gel. Although the cosmetic composition for lips has a transparent appearance, it may be characterized in that it is colored when applied to the skin.

In one embodiment, the citric acid provides a cosmetic composition for lips comprising 0.01 to 1, preferably 0.01 to 0.5, 0.01 to 0.1% by weight relative to the total weight of the cosmetic composition.

Citric acid has the property of breaking double bonds into single bonds. Most organic dyes have double bonds, so if a large amount of citric acid is applied, over time, the double bonds in the organic dyes are broken so that the color does not develop. Therefore, when citric acid outside the above range is added, the transparent gel is discolored due to no effect of citric acid in a small amount, or in a large amount, the citric acid is not dispersed and separates into agglomerates.

In one embodiment, the cosmetic composition may include about 5 types of ester oil in an amount of 70 to 90, 75 to 90, 80 to 90% by weight based on the total weight of the cosmetic composition, and 0.01 to 1, 0.05 to 1, 0.1 of a colorant. to 1% by weight. The ester-based oil is pentaerythrityl tetraisostearate (Pentaerythrityl Tetraisostearate), hydrogenated polyisobutene (Hydrogenated Polyisobutene), isotridecyl isononanoate (Isotridecyl Isononanoate), neopentyl glycol diethylhexanoate (Neopentyl Glycol Diethylhexanoate), diisostearyl malate (Diisostearyl Malate) and the like, characterized in that it contains one or more oils from the group consisting of. If the content of oil is too excessive, the feeling of use is greasy and stuffy.

Numerical values set forth herein are intended to include the meaning of “about” even if not specified. For example, the numerical values set forth above may vary by 10%, 5%, 2%, or 1%. In some embodiments, the value may vary by 5%, 2%, or 1%. For example, a value of 5 is meant to include any value between 4.5 and 5.5, between 4.75 and 5.25, or between 4.9 and 5.1, or between 4.95 and 5.05 having a range of approximately 5.

In one embodiment, the cosmetic composition for lips among the cosmetic composition may be formulated as, for example, lipstick, lip gloss, lip balm, lip cream, lip pencil, lip liner pencil, or liquid rouge, but is not limited thereto, for example. For example, it can be used for various color makeup purposes such as eye shadow, cheek, or blusher depending on the purpose of use.

The cosmetic composition includes a colorant, a pigment, a preservative, a stabilizer, a surfactant, a thickener, a solubilizer, a humectant, an emollient, an ultraviolet absorber, a preservative, a disinfectant, an emulsifier, an antioxidant, a pH adjuster, an organic and inorganic pigment, a fragrance, purified water, It may further include additives commonly used in the art, such as dispersants, fillers, sweeteners, vitamins, free-radical scavengers, sequestering agents, cooling agents or limiting agents. The blending amount of the additional ingredients such as the preservative can be easily selected by those skilled in the art within a range that does not impair the purpose and effect of the present invention, and the blending amount may be 0.001 to 40% by weight based on the total weight of the composition.

The pigment is, for example, Yellow No. 203, Yellow No. 4, Yellow No. 5, Yellow No. 201, Yellow No. 204, Red No. 103, Red No. 201, Red No. 202, Red No. 218, Red No. 220, Red No. 223, Red No. 226, Red No. 227, Blue No. 1, Blue No. 2, or mixtures thereof may be used.

A person skilled in the art can select any additional ingredients and/or amounts thereof such that the advantageous properties of the composition according to the present disclosure are not adversely or substantially not adversely affected by the expected addition.

Another aspect provides a method for preparing the cosmetic composition for lips.

In view of the technical level of those of ordinary skill in the art, a cosmetic composition for lips can be prepared by a conventional manufacturing method including the heating, mixing and cooling.

All technical terms used above have the same meaning as commonly understood by those skilled in the art, unless otherwise defined.

The addition of citric acid blocks the reaction of the gelling agent and the colorant, thereby maintaining the transparent appearance of the cosmetic composition for lips.

1 is a result showing whether the gelling agent is dissolved.
2 is a result showing whether the galling agent and the colorant react.
3 is a result showing whether citric acid is dispersed.
4 is a result of confirming whether the color is developed on the acrylic plate and the skin.
5 is a result of performing a UV-white light test.

Hereinafter, the present invention will be described in more detail through examples. However, the Examples and Experimental Examples according to the present invention may be modified in various other forms, and the scope of the present invention should not be construed as being limited to the Examples and Experimental Examples described below. The Examples and Experimental Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art. In addition, although preferred methods and samples are described herein, similar or equivalent ones are also included in the scope of the present specification.

Preparation of cosmetic composition for transparent gel lips

By mixing according to each component and content described in Table 1 below, Examples and Comparative Examples transparent gel cosmetic compositions for lips were prepared. Of the raw materials in Table 1, the composition except for the gelling agent (dibutyllauroylglutamide, dibutylethylhexanoylglutamide, octyldodecanol) and citric acid was measured in beaker 1 and dissolved by heating at 85~90℃, The mixture was uniformly mixed with a homogenizer at 2500 rpm for 15 minutes.

The gelling agent was pre-dispersed in octyldodecanol, measured in a separate beaker 2, and heated to 90-100° C. to confirm that it was completely dissolved. After mixing beaker 1 and beaker 2, citric acid was added at a temperature of 85 to 90° C. and uniformly mixed at 2500 rpm for 5 minutes. The contents in Table 1 below are based on weight %. The prepared mixture was subjected to degassing, aroma and cooling to prepare lip makeup.

Kinds Ingredient name Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 thickener Hydrogenated polyisobutene 30.00 30.00 30.00 30.00 30.00 30.00 30.00 gelling agent Octyldodecanol 15.00 15.00 15.00 15.00 15.00 15.00 15.00 dibutylethylhexanoylglutamide, 2.50 3.33 3.75 2.50 2.50 2.50 2.50 dibutyllauroylglutamide 2.50 1.67 1.25 2.50 2.50 2.50 2.50 skin conditioning agent Pentaerythrityltetraisostearate 15.00 15.00 15.00 15.00 15.00 15.00 15.00 skin conditioning agent isotridecyl isononanoate 15.00 15.00 15.00 15.00 15.00 15.00 15.00 skin conditioning agent Neopentyl glycol diethyl hexanoate 15.00 15.00 15.00 15.00 15.00 15.00 15.00 dispersant diisostearyl malate 4.80 4.80 4.80 4.80 4.80 4.80 4.80 coloring agent Red No. 218 0.20 0.20 0.20 0.20 0.20 0.20 0.20 citric acid 0.03 0.03 0.03 - 0.45 0.6 0.01

Lip makeup formulations were prepared with the ingredients and contents shown in Examples 1 to 3 and Comparative Examples 1 to 4.

When preparing the lip makeup formulation according to the gelling agent ratio of Examples 1 to 3, as shown in FIG. 1, when the mixing ratio of dibutylethylhexanoylglutamide and dibutyllauroylglutamide is 1:1, 100 It can be confirmed that it is completely melted at ℃ and clear, and in the case of 2:1, it is not completely dissolved and there is a little gel mass. In the case of 3:1, the gel hardly melted, so it could be confirmed that there were many lumps. When measuring the melting point of each example, when the mixing ratio of dibutylethylhexanoylglutamide and dibutyllauroylglutamide is 1:1, it is 68℃, when it is 2:1, it is 73℃, and when it is 3:1, it is 79℃. was found to be the highest.

Experimental Example 1: Confirmation of change in appearance color due to addition of citric acid

Changes in the appearance color of the transparent gelling agent and the colorant were confirmed for Example 1 and Comparative Example 1, and the evaluation method and results are as follows.

In order to confirm the change in the appearance color by temperature of Example 1, which is a formulation to which citric acid was added, and Comparative Example 1, which is a formulation to which citric acid was not added, the appearance colors were checked at 25° C., 45° C., 80° C., and 100° C.

As shown in FIG. 2 , in the case of Example, it can be confirmed that the gelling agent and the colorant do not react at all temperatures to maintain a transparent and clear appearance, whereas in Comparative Example 1, the gelling agent and the colorant react at all temperatures to show the appearance You can see that it has turned pink. In addition, when comparing Comparative Examples 1 to 4 at 25° C., it was confirmed that Comparative Example 1 without citric acid turned pink in appearance, and Comparative Examples 2 and 3 containing excessive citric acid had a transparent appearance. In addition, it can be seen that Comparative Example 4, in which a very small amount of citric acid was added, also reacted slightly, and the appearance was changed to orange.

Experimental Example 2: Confirmation of dispersibility according to citric acid content

Citric acid does not dissolve in oily components, so when a high content is applied, it is not dispersed, but agglomerates and sinks. The octyldodecanol component included in Example 1 and Comparative Example is an aliphatic alcohol and has a small amount of hydroxyl groups soluble in the aqueous phase, so it can dissolve a certain amount of citric acid, thereby improving dispersibility of citric acid in lip makeup formulations. can A test was performed to confirm the dispersibility of citric acid in the lip makeup formulations prepared in Examples and Comparative Examples 2 to 4.

As shown in FIG. 3 , it can be seen that citric acid is evenly dispersed in Example 1, and in Comparative Example 2, dispersibility is poor and citric acid is slightly agglomerated. In Comparative Example 3, it can be confirmed that the high content of citric acid is agglomerated with each other and sinks to the bottom. In Comparative Example 4, although the dispersibility of citric acid is good, it can be confirmed that the appearance is changed to pink due to the reaction of the gelling agent and the colorant.

Experimental Example 3: Confirmation of color development and coloring according to the content of citric acid

Tests were performed to check whether the product was colored and whether or not to be colored when the product was applied to the acrylic plate of Example 1 and the skin.

Since the color develops when the colored dye reacts with water due to the pH change, the test was conducted on an acrylic plate without water and skin with water. In order to proceed with the test, after applying Example 1 to the acrylic plate and the skin, color development was checked. After wiping the product with a tissue, it was checked whether the skin was colored or not.

As a result of comparing the difference in color development between the acrylic plate and the skin, as shown in FIG. 4 , it was confirmed that the color did not develop when applied to the acrylic plate and was transparent. did. In addition, it was confirmed that the color remained on the skin even after wiping off the product.

In addition, a UV-white light test was performed to quickly check the presence or absence of discoloration of the samples of Example 1 and Comparative Examples 2 to 4 to confirm whether the tint pigment was colored or not. An experiment was conducted to check the degree of color development after 3 days in Examples and Comparative Examples 2 to 4 using a Light Meter (wavelength 340 to 800) device.

As shown in FIG. 5 , when Example 1 and Comparative Examples 1 to 4 are applied to the skin immediately after application, it can be seen that the tint pigment reacts to develop a pink color. On the other hand, when Example 1 and Comparative Examples 1 to 4 were applied to the skin 3 days after the light test, Example 1 and Comparative Example 1 without citric acid developed pink color, but Comparative Examples 2 and 3 containing a lot of citric acid were applied to the skin It was confirmed that the color did not develop or became weak. In Comparative Example 4, in which a very small amount of citric acid was added, it was confirmed that the color developed well.

Claims (4)

Dibutyl Lauroyl Glutamide, Dibutyl Ethylhexanoyl Glutamide and Citric Acid,
The mixing weight ratio of the dibutyl lauroyl glutamide and dibutyl hexanoyl glutamide is 1:1 to 1:3,
The transparent gel lip color cosmetic composition comprising 0.01 to 1% by weight of the citric acid based on the total weight of the cosmetic composition. delete delete delete

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