KR20210133795A - Cosmetic composition containning encapsulated cooling agent and method thereof - Google Patents

Abstract

The present invention relates to a cosmetic composition for lips. The cosmetic composition for lips comprises an encapsulated cooling agent which comprises: 0.01 to 1 wt% of methyl diisopropyl propionamide; 0.01 to 1 wt% of menthyl lactate; and 0.01 to 1 wt% of ethyl methane carboxamide. The cosmetic composition for lips has an excellent moisturizing effect by reducing dryness after applying the cosmetic composition compared to the existing water dispersion type cosmetic composition for lips and can maintain a feeling of refreshing for a long time.

Description

COSMETIC COMPOSITION CONTAINNING ENCAPSULATED COOLING AGENT AND METHOD THEREOF TECHNICAL FIELD

It relates to a cosmetic composition comprising an encapsulated cooling agent and a method for manufacturing the same.

There are various products for lip makeup, such as lipstick, lip gloss, lip tint, and lip lacquer. In addition to the basic lip protection and cosmetic purposes, these cosmetic compositions for lips also exhibit a temperature reduction effect by maintaining a refreshing feeling on the lips.

Water-dispersion type liquid lip has a cool feeling of water itself when first applied, but there is a problem that it feels dry due to volatilization of water as time goes by, and due to such dryness, liquid lip products of water-dispersion type are not preferred. However, the oil-dispersion type liquid lip does not feel dry due to the volatilization of water, but it does not have a cooling feeling. Also, even if you feel a cooling sensation, the duration is very short.

Under this technical background, research on a cosmetic composition for lips having a cooling feeling in which a cooling agent is encapsulated without a feeling of dryness due to volatilization of water is being actively conducted (KR Registration No. 10-1701239), but it is still insufficient.

One aspect is to provide a cosmetic composition for lips comprising 0.1 to 2% by weight of a cooling agent relative to the total weight of the cosmetic composition.

One aspect provides a cosmetic composition for lips comprising 0.1 to 2% by weight of a cooling agent relative to the total weight of the cosmetic composition.

When the weight range of the cooling agent is 0.1 wt% or less, the effect is insignificant, and when it is 2 wt% or more, irritation is high, which is not preferable.

In one embodiment, the cooling agent may include methyldiisopropyl propionamide, menthyl lactate and ethylmentane carboxamide.

In one embodiment, the cooling agent may include 0.01 to 1% by weight of methyldiisopropyl propionamide, 0.01 to 1% by weight of menthyl lactate, and 0.01 to 1% by weight of ethylmentane carboxamide, based on the total weight of the cosmetic composition .

The methyldiisopropyl propionamide may be 0.01 to 0.08% by weight, 0.01 to 0.06% by weight, 0.01 to 0.04% by weight or 0.01 to 0.02% by weight, menthyl lactate 0.01 to 0.08% by weight, 0.01 to 0.06% by weight, 0.01 to 0.04% by weight or 0.01 to 0.02% by weight, and 0.01 to 0.08% by weight of ethylmentane carboxamide, 0.01 to 0.06% by weight, 0.01 to 0.04% by weight or 0.01 to 0.02% by weight.

Due to the specific mixed weight of methyldiisopropyl propionamide, menthyllactate and ethylmentane carboxamide, the cosmetic composition has a higher moisturizing effect and a refreshing feeling.

In one embodiment, the cooling agent may be encapsulated. By encapsulating the cooling agent, it is possible to obtain a cosmetic composition having higher formulation stability.

In one embodiment, the cosmetic composition may be any one of lipstick, lip gloss, lip tint or lip lacquer.

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.

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.

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

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 present invention relates to a cosmetic composition containing a cooling agent and a method for manufacturing the same, and it is possible to provide a cosmetic composition for lips excellent in temperature reduction and durability, feeling of use, moisture content and formulation stability.

1 is a result of measuring the temperature reduction and durability for 5 minutes after applying a cosmetic composition for lips to the skin.
2 is a comparison measurement result by photographing the skin temperature with an infrared camera for 5 minutes after applying a cosmetic composition for lips to the skin.
3 is a result of comparing and measuring skin moisture after applying a cosmetic composition for lips to a test site.
4 is a result of measuring the moisture content of the skin after applying the cosmetic composition for lips to the skin.

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.

1. Preparation of cosmetic composition for lips

The preparation of the cosmetic composition for lips was made as follows. The raw materials were prepared by measuring them in a beaker according to the capacity shown in Table 1 below, and the aqueous phase part raw materials were sequentially added and uniformly dispersed and dissolved for 5 minutes using an azimuth to prepare an aqueous dispersion formulation. After that, the aqueous dispersion can be dispersed in the aqueous phase, and the cooling agent encapsulated at 4.75% (based on 100%) of Methyl Diisopropyl Propionamide, Menthyl Lactate, and Ethyl Menthane Carboxamide, respectively, is added and dispersed. Examples 1 to 5 and Comparative Examples not including a cooling agent were prepared.

The content of the cooling agent is 0.01425 (Methyl Diisopropyl Propionamide, Menthyl Lactate, Ethyl Menthane Carboxamide 0.00475% each) in Example 1, 0.057 in Example 2 (Methyl Diisopropyl Propionamide, Menthyl Lactate, Ethyl Menthane Carboxamide 0.019% each) In Example 3 0.09975 (Methyl Diisopropyl Propionamide, Menthyl Lactate, Ethyl Menthane Carboxamide 0.03325% each), Example 4 0.1425 (Methyl Diisopropyl Propionamide, Menthyl Lactate, Ethyl Menthane Carboxamide 0.0475% each) and Example 5 0.18525 (Methyl Diisopropyl Propionamide) , Menthyl Lactate, and Ethyl Menthane Carboxamide (0.06175% each) were added.

Ingredient name Example 1 Example 2 Example 3 Example 4 Example 5 comparative example Purified water To 100 To 100 To 100 To 100 To 100 To 100 moisturizer Butylene Glycol 5.7 5.7 5.7 5.7 5.7 5.7 glycerin 5.7 5.7 5.7 5.7 5.7 5.7 conditioning agent dimethicone 0.5 0.5 0.5 0.5 0.5 0.5 lecithin 0.5 0.5 0.5 0.5 0.5 0.5 film forming agent Glyceryl Polymethacrylate 8.6 8.6 8.6 8.6 8.6 8.6 coloring agent 1.18 1.18 1.18 1.18 1.18 1.18 thickener Ammonium Acryloyldimethyltaurate/VP Copolymer 1.0 1.0 1.0 1.0 1.0 1.0 Polyacrylate crosspolymer-6 1.0 1.0 1.0 1.0 1.0 1.0 antiseptic Phenoxyethanol 0.9 0.9 0.9 0.9 0.9 0.9 1,2-Hexanediol 0.9 0.9 0.9 0.9 0.9 0.9 Surfactants PEG-60 Hydrogenated Castor Oil 0.4 0.4 0.4 0.4 0.4 0.4 cooling agent Methyl diisopropyl propionamide, menthyl lactate and ethyl menthane carboxamide 0.01425 0.057 0.09975 0.1425 0.18525 - flavoring agent 0.1 0.1 0.1 0.1 0.1 0.1

Experimental Example 1: Evaluation of feeling of use according to cooling agent content

The feeling of use according to the content of the cooling agent of the makeup cosmetic composition of the above example was evaluated.

For the test, the cosmetic composition of Examples 1 to 5 was occluded on the test site for 24 hours, and the patch was removed to determine the skin reaction, and the results are shown in Table 2 below.

weight (%) 0.1 0.4 0.7 1.0 1.3 refreshment 2 4 4 5 5 irritation 0 One 3 4 5 total score 2 4 2 One One

Refreshing feeling (0 - no feeling 5 - very refreshing) / irritation (0 - no irritation 5 - very strong) / total feeling of use (1 - bad 5 - very refreshing without irritation)

As a result, as shown in Table 2, it can be seen that the cosmetic composition of Example 2 is the most excellent in the feeling of use because it gives a refreshing feeling and has less irritation.

Experimental Example 2: Temperature reduction and durability evaluation

The temperature reduction and durability of the cosmetic composition for lips of Example 2, which showed the best feeling of use in Experimental Example 1, was evaluated.

In order to measure the temperature reduction and durability of 5 healthy adults (average age 26.6 years old), the skin temperature at the time of no application of the test site was photographed with an infrared camera. The skin temperature after minutes and 5 minutes was photographed with an infrared camera.

As shown in FIGS. 1 and 2 , the temperature reduction and lasting test results showed an improved skin temperature reduction rate when compared with the comparative example, which is an aqueous dispersion formulation having problems in the prior art.

Experimental Example 3: Moisture level evaluation

The skin moisture level of the cosmetic composition for lips of the above example was evaluated.

For the test, the test site was washed with lukewarm water and waited in a constant temperature and humidity room (22±2℃, 40~60% RH) for 10 minutes. was applied and the skin moisture level was measured three times each for comparison.

As shown in FIGS. 3 and 4, the skin moisture level of Example 2 was found to increase by 708.0 and 746.8%, respectively, after use of the cosmetic composition of Example 2, as shown in FIGS.

Experimental Example 4: Formulation stability evaluation

Formulation stability evaluation was performed for the cosmetic compositions for lips of Examples 1 to 5.

According to the temperature given in Table 3, it was stored in a constant temperature bath for 30 days, and the change in appearance was visually observed. It was evaluated according to the following <Evaluation Criteria>, and the results are shown in Table 3.

<Evaluation criteria>

Excellent stability: ○

Slight change in formulation: △

Formulation separation and discoloration: X

Temperature Example 1 Example 2 Example 3 Example 4 Example 5 4℃ ○ ○ ○ ○ ○ 25℃ ○ ○ ○ ○ ○ 37℃ ○ ○ ○ ○ ○ 45℃ ○ ○ ○ ○ ○ 50℃ ○ ○ △ △ △ Cycle ○ ○ ○ ○ ○

As shown in Table 3, the stability of the cosmetic compositions of Examples 1 to 5 was generally good, and among them, the formulation stability of the cosmetic compositions of Examples 1 and 2 was found to be the most excellent.

Claims (5)

A cosmetic composition for lips comprising 0.1 to 2% by weight of a cooling agent based on the total weight of the cosmetic composition. The cosmetic composition for lips according to claim 1, wherein the cooling agent includes methyldiisopropyl propionamide, menthyl lactate and ethylmentane carboxamide. The lip of claim 1 , wherein the cooling agent comprises 0.01 to 1% by weight of methyldiisopropyl propionamide, 0.01 to 1% by weight of menthyl lactate, and 0.01 to 1% by weight of ethylmentane carboxamide, based on the total weight of the cosmetic composition cosmetic composition for use. The cosmetic composition for lips according to claim 1, wherein the cooling agent is encapsulated. The cosmetic composition for lips according to claim 1, wherein the cosmetic composition is any one of lipstick, lip gloss, lip tint, and lip lacquer.

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