JP2020200259A - Cleansing cosmetic - Google Patents

Abstract

To provide a cleansing cosmetic that has high cleansing power, spreads well during application, gives a refreshing feel after rinsing to eliminate the need for rinsing again, and can maintain long-term stability in a wide range of temperature conditions.SOLUTION: A cleansing cosmetic contains (A) polyoxypropylene glyceryl ether, (B) ester oil that is liquid at 25°C, (C) alkyl glucoside, and (D) polyhydric alcohol.SELECTED DRAWING: None

Description

The present invention relates to cleansing cosmetics.

Conventionally, preparations aimed at removing make-up cosmetics are oil-type cleansing cosmetics containing a large amount of oily ingredients, and cream-milk-type cleansing cosmetics in which oils are emulsified in water with a nonionic surfactant. , Liquid lotion type cleansing cosmetics whose main component is a water-soluble component are roughly classified into three types.

Makeup cosmetics that cleansing cosmetics target for cleaning mainly consist of oily ingredients, and in recent years, make-up cosmetics that are difficult to remove, such as waterproof mascara, have become popular. It is necessary to use an oil-type cleansing cosmetic because it is appropriate to apply makeup to the oily ingredients and wash it off in order to remove them firmly. However, while oil-type cleansing cosmetics have an excellent cleansing effect on oily stains such as make-up, they have a large amount of oily components, which makes them highly viscous and difficult to spread, and cannot be applied firmly to the face. There is a problem that a sticky feeling as if remaining is generated and it is necessary to wash with a face wash again (W face wash). Further, in cream / milk type cleansing cosmetics, since the oil is finely and stably dispersed in water, the original detergency of the oil cannot be exhibited and the cleansing power may not be sufficient. Liquid lotion type cleansing cosmetics are easy to apply to the face due to their low viscosity, and you can feel a refreshing feeling after rinsing, but many of them are dissatisfied with their cleansing power because they cannot contain a lot of oily ingredients. .. Therefore, in recent years, it has high cleansing power, is excellent in spreading at the time of application, and gives a refreshing feeling after rinsing, so that W face washing is unnecessary, and it is possible to maintain long-term stability over a wide range of temperature conditions. Cleansing cosmetics are required.

Especially in liquid lotion type cleansing cosmetics, by combining with a specific nonionic surfactant, the cleansing power is maintained without adding oily ingredients, and it is sustained by suppressing stickiness and excessive degreasing power. By giving a moist feeling (Patent Document 1) or by combining a nonionic surfactant, an oily component and a water-soluble component in a specific ratio, there is no oily feeling during use, and it can be washed off cleanly and moisturized after cleansing. Those having an excellent feeling (Patent Document 2) are being studied.

In addition, by blending a specific polyoxyalkylene glycol derivative or glycerin derivative, makeup stains that are difficult to remove even with oily components can be removed, and those with low stickiness and irritation after rinsing are also examined (Patent Documents 3 and 4). Has been done.

Japanese Unexamined Patent Publication No. 2010-70521 International Publication WO2015 / 005272 JP-A-2017-178868 Japanese Unexamined Patent Publication No. 2018-070499

However, with the conventional technique, there is a problem that when a cleansing cosmetic is applied to the face, it does not spread well, and even if it has cleansing power, it cannot actually remove makeup stains firmly. In addition, it is necessary to wash the face again with face wash (W face wash) in order to feel the refreshing feeling that the makeup stains could be removed because the moist feeling remains after washing off the cleansing cosmetics. There were also challenges. Furthermore, since liquid lotion type cleansing cosmetics are often solubilized transparent liquids, it is possible to maintain long-term stability over a wide range of temperature conditions from low temperature to high temperature while maintaining high cleansing power. It was very difficult and there was still room for improvement.

As a result of diligent studies to solve the above problems, the present inventor has obtained (A) polyoxypropylene glyceryl ether, (B) ester oil liquid at 25 ° C., (C) alkyl glucoside, and (D) polyhydric alcohol. It has been found that it is possible to provide a cleansing cosmetic characterized by containing it.

The present invention has high cleansing power, is excellent in spreading at the time of application, does not require double face washing because it gives a refreshing feeling after washing, and can maintain long-term stability over a wide range of temperatures. It provides cleansing cosmetics.

Hereinafter, the present invention will be described in detail. The present invention is a cleansing cosmetic comprising (A) polyoxypropylene glyceryl ether, (B) an ester oil liquid at 25 ° C., (C) an alkyl glucoside, and (D) a polyhydric alcohol. ..

The cleansing cosmetic according to the present invention contains (A) polyoxypropylene glyceryl ether.

The polyoxypropylene glyceryl ether (A) used in the present invention is not particularly limited, but for example, polyoxypropylene glyceryl ether (8PO), polyoxypropylene glyceryl ether (10PO), polyoxypropylene glyceryl. Examples include ether (16 P.O.), polyoxypropylene glyceryl ether (50 P.O.), and the like, and one or more selected from these can be contained. Among them, polyoxypropylene glyceryl ether (8PO) is preferable from the viewpoint that makeup stains can be firmly applied when applied to the face. In addition, P. in parentheses. O. Indicates a polyoxypropylene chain, and the number indicates the number of added moles.

The cleansing cosmetic according to the present invention (B) contains a liquid ester oil at 25 ° C.

The ester oil used in the present invention (B) that is liquid at 25 ° C. is not particularly limited, and is, for example, 2-ethylhexyl palmitate, 2-hexyldecyl myristate, 2-ethylhexyl stearate, 2-ethylhexyl myristate, and palmitin. Isopropyl acid, isopropyl myristate, cetyl 2-ethylhexanoate, octyldodecyl myristate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, glyceryl tri (caprylic capric acid), oleyl oleate, diethylhexyl sevacinate , Diisopropyl sebacate, ethylhexyl isononanoate, isononyl isononanoate and the like, and one or more selected from these can be contained. Among them, 2-ethylhexyl palmitate is preferable from the viewpoint that makeup stains can be firmly applied when applied to the face.

By using the (A) polyoxypropylene glyceryl ether used in the present invention and the (B) liquid ester oil at 25 ° C. in combination, a good and high cleansing force that cannot be achieved by conventional general techniques can be achieved. It is possible to obtain an effect that makes it possible to maintain long-term stability over time under a wide range of temperature conditions.

The (A) polyoxypropylene glyceryl ether and the (B) liquid ester oil at 25 ° C. used in the present invention may be contained in the cleansing cosmetics, and the (A) polyoxypropylene glyceryl ether and the above (B). ) The total amount of the liquid ester oil at 25 ° C. is preferably 0.5 to 6% by mass, more preferably 2 to 5% by mass. If the total amount of the (A) polyoxypropylene glyceryl ether and the (B) liquid ester oil at 25 ° C. is less than 0.5% by mass, the cleansing power may be poor and makeup stains may not be removed firmly. On the other hand, if it exceeds 6% by mass, the viscosity increases, which makes it difficult to spread at the time of application, and there is a possibility that makeup stains cannot be removed firmly.

The content ratio of the (A) polyoxypropylene glyceryl ether used in the cleansing cosmetics according to the present invention and the (B) liquid ester oil at 25 ° C. is not particularly limited, but when applied to the face, it spreads well and is washed away. From the viewpoint of ease, the range is preferably 1: 4 to 4: 1, more preferably 2: 3 to 3: 2.

The cleansing cosmetic according to the present invention contains (C) alkyl glucoside. As a result, it becomes easy to wash off, and a refreshing feeling is obtained, so that it is not necessary to wash the face with W.

The alkyl glucoside (C) used in the present invention is not particularly limited, and examples thereof include decyl glucoside, lauryl glucoside, octyl glucoside, (caprylic / capryl) glucoside, and one or more selected from these. Can be contained. Among them, decyl glucoside is preferable from the viewpoint of good spreadability when applied to the face.

The alkyl glucoside (C) used in the present invention may be contained in the cleansing cosmetics, preferably 1 to 10% by mass, more preferably 2.5 to 8.5% by mass. If the amount of the (C) alkyl glucoside is less than 1% by mass, the cleansing cosmetic cannot be thoroughly washed away, and a residual feeling may remain on the skin. On the other hand, if it exceeds 10% by mass, the degreasing power is excellent and the skin may become dry after being washed away.

The cleansing cosmetic according to the present invention contains (D) a polyhydric alcohol. This makes it possible to improve long-term stability over time under a wide range of temperature conditions from low temperature to high temperature.

The polyhydric alcohol (D) used in the present invention is not particularly limited, but for example, dipropylene glycol, 1,2-pentanediol, 1,3-butylene glycol, 1,2-hexanediol, propylene glycol, ethylene glycol, and the like. Examples thereof include diethylene glycol, polyethylene glycol, glycerin and the like, and two or more kinds selected from these can be contained.

The polyhydric alcohol (D) used in the present invention preferably contains polyethylene glycol from the viewpoint that it can be easily washed away and the refreshing feeling is improved so that it is not necessary to wash the face with W. Further, it is preferable to use polyethylene glycol and a polyhydric alcohol other than the polyethylene glycol in combination, and from the viewpoint of good compatibility with makeup stains, it is most preferable to use polyethylene glycol and dipropylene glycol in combination.

The polyhydric alcohol (D) used in the present invention may be contained in the cleansing cosmetics, preferably 8 to 32% by mass, more preferably 12 to 28% by mass in the total composition of the cleansing cosmetics. .. When the content of the (D) polyhydric alcohol is less than 8% by mass and exceeds 32% by mass, stability may deteriorate under low temperature and high temperature conditions.

Of the (D) polyhydric alcohol used in the present invention, polyethylene glycol may be contained in the cleansing cosmetics, preferably 1 to 8% by mass, more preferably 2.5 to 6.5% by mass. .. If polyethylene glycol is less than 1% by mass in the (D) polyhydric alcohol, the cleansing cosmetic cannot be thoroughly washed away, and a residual feeling may remain on the skin. On the other hand, if it exceeds 8% by mass, a slimy feeling remains on the skin, and it may be necessary to wash the face with W.

Among the polyhydric alcohols (D) used in the present invention, polyethylene glycol is not particularly limited, and examples thereof include polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, and the like, and one or two selected from these. It can contain more than a seed. Among them, polyethylene glycol 200 is preferable from the viewpoint of good spreadability when applied to the face.

The appearance of the cleansing cosmetic according to the present invention is not particularly limited, but it is preferably transparent from the viewpoint of good appearance when filled in a transparent container.

In the cleansing cosmetics according to the present invention, in addition to the above-mentioned ingredients, ingredients usually used in cosmetics can be blended as long as the effects of the present invention are not impaired. For example, oils such as higher alcohols and higher fatty acids, surfactants, lower alcohols, moisturizers, water-soluble polymers, antioxidants, water-soluble UV absorbers, chelating agents, preservatives, antibacterial agents, fragrances, animal and vegetable oils, etc. Vitamin, plant extract, inorganic salt and the like can be used, and these may be contained alone or in combination of two or more depending on the purpose.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

In the evaluation test shown in the present specification, the components contained in the cleansing cosmetics and the results of various experiments conducted while changing the content thereof are shown below. Here, the units indicating the content of each component of the cleansing cosmetics are all mass%, which were prepared by a conventional method. The appearance immediately after preparation is all transparent.

In the inventions shown herein, "cleansing power", "spreading during application", "necessity of double face washing", "appearance", "stability under low temperature conditions" and "stability under high temperature conditions". Was evaluated.

In the evaluation test shown in the present specification, "cleansing power", "spreading at the time of application", and "necessity of double face washing" are obtained by using a waterproof mascara (trade name: heroine make-up volume & curl). We asked 20 professional panelists who made up using mascara Super WP (manufactured by Isehan Co., Ltd.) to use it, and compared and evaluated its usability.

In the evaluation test shown in the present specification, 120 g of the obtained cleansing cosmetic in "appearance" was filled in a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.), and the state immediately after preparation was visually confirmed.

In the evaluation test shown in the present specification, the cleansing cosmetics obtained in "stability under low temperature conditions" and "stability under high temperature conditions" were sampled in a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.). Was filled with 120 g and allowed to stand in a constant temperature bath at 5 ° C. and 50 ° C. for 3 months, and then the appearance was visually confirmed.

Evaluation Criteria for "Cleansing Ability" ◎: 16 or more out of 20 responded that make-up was firmly removed 〇: 11 or more and 15 or less out of 20 responded that make-up was firmly removed △: 6 or more and 10 out of 20 The following responded that the makeup was removed firmly ×: 5 out of 20 responded that the makeup was removed firmly

Evaluation criteria for "spreading during application" ◎: 16 or more out of 20 responded that they were able to apply makeup stains well 〇: 11 or more and 15 or less out of 20 people were able to apply makeup stains firmly Answer △: 6 to 10 out of 20 responded that they were able to apply makeup stains firmly ×: 5 out of 20 responded that they were able to apply makeup stains firmly

Evaluation criteria for "necessity of W face washing" ◎: 16 or more out of 20 responded that W face washing is not necessary 〇: 11 or more and 15 or less out of 20 responded that W face washing is not necessary △ : 6 to 10 out of 20 responded that it is not necessary to wash W face ×: 5 out of 20 responded that it is not necessary to wash W face

Evaluation criteria for "appearance", "stability under low temperature conditions" and "stability under high temperature conditions" ◎: No layer separation, no white turbidity 〇: No layer separation, slight white turbidity Seen △: No layer separation, cloudy ×: Layer separation

First Evaluation Test In the first evaluation test, cleansing cosmetics in which (A) polyoxypropylene glyceryl ether and (B) liquid ester oil at 25 ° C. were variously changed in type, content, and content ratio were evaluated. Table 1 shows the ingredients, content and evaluation results of cleansing cosmetics.

In Examples 1 to 11, good results were obtained even if the type, content, and content ratio of the (A) polyoxypropylene glyceryl ether and the (B) liquid ester oil at 25 ° C. were variously changed.

Second Evaluation Test In the second evaluation test, cleansing cosmetics with various types and contents of (C) alkyl glucosides were evaluated. Table 2 shows the ingredients, content and evaluation results of cleansing cosmetics.

In Examples 12 to 19, good results were obtained even if the type and content of the (C) alkyl glucoside were changed in various ways.

Third Evaluation Test In the third evaluation test, (D) cleansing cosmetics with various types and contents of polyhydric alcohols were evaluated. Table 3 shows the ingredients, contents and evaluation results of the cleansing cosmetics.

In Examples 20 to 29, good results were obtained even if the type and content of the (D) polyhydric alcohol were variously changed.

Fourth Evaluation Test In the fourth evaluation test, among the (D) polyhydric alcohols, cleansing cosmetics in which the type and content of polyethylene glycol were variously changed were evaluated. Table 4 shows the ingredients, contents and evaluation results of the cleansing cosmetics.

In Examples 30 to 37, good results were obtained even if the type and content of polyethylene glycol among the (D) polyhydric alcohols were changed.

Examples of formulations of the composition are given below. The compositions obtained by the following formulation examples have "cleansing power", "spreading during application", "necessity of double face washing", "appearance", "stability under low temperature conditions" and "high temperature conditions". Good results were obtained regarding "stability in".

(Example 38)
<Cleansing cosmetics>
Ingredient content (mass%)
(A) Polyoxypropylene glyceryl ether (8PO) 2,000
(B) 2-ethylhexyl palmitate 2,000
(C) Decyl glucoside 5.300
(D) Dipropylene glycol 10.000
(D) Propylene glycol 4.000
(D) 1,3-butylene glycol 2,000
(D) Polyethylene glycol 200 4,000
Polyoxyethylene glyceryl isostearate (8EO) 5.000
Polyoxyethylene coconut oil fatty acid glyceryl (7EO) 10.000
Polyoxyethylene (caprylic / capric acid) glyceryl (6EO) 10.000
Microcitrus Biancaea fruit extract 0.001
Chamomile flower extract 0.001
Succinyl atelocollagen 0.001
Dipotassium glycyrrhizinate 0.001
Citric acid 0.040
Sodium citrate 0.300
Fragrance 0.300
Purified water 45.506
100.000 in total

INDUSTRIAL APPLICABILITY The present invention has high cleansing power, is excellent in spreading at the time of application, does not require double face washing because it gives a refreshing feeling after washing, and can maintain long-term stability over a wide range of temperature conditions. Can provide cleansing cosmetics.

Claims (6)

A cleansing cosmetic comprising (A) a polyoxypropylene glyceryl ether, (B) an ester oil liquid at 25 ° C., (C) an alkyl glucoside, and (D) a polyhydric alcohol. The cleansing cosmetic according to claim 1, wherein the total content of (A) polyoxypropylene glyceryl ether and (B) liquid ester oil at 25 ° C. is 0.5 to 6% by mass. Fee. The cleansing makeup according to claim 1 or 2, wherein the content ratio of (A) polyoxypropylene glyceryl ether and (B) liquid ester oil at 25 ° C. is 1: 4 to 4: 1. Fee. (D) The cleansing cosmetic according to any one of claims 1 to 3, wherein the content of the polyhydric alcohol is 8 to 32% by mass. (D) The cleansing cosmetic according to any one of claims 1 to 4, wherein the polyhydric alcohol is a combination of polyethylene glycol and a polyhydric alcohol other than the polyethylene glycol. The cleansing cosmetic according to claim 5, wherein the content of polyethylene glycol in the total composition of the cleansing cosmetic is 1 to 8% by mass.