JP7337367B2 - cleansing cosmetics - Google Patents

Description

The present invention relates to cleansing cosmetics.

Traditionally, formulations intended to remove make-up cosmetics include oil-type cleansing cosmetics containing a large amount of oily ingredients, and cream/milk-type cleansing cosmetics in which oil is emulsified in water with a nonionic surfactant. , and liquid/lotion type cleansing cosmetics whose main ingredients are water-soluble ingredients.

Makeup cosmetics to be cleaned by cleansing cosmetics mainly consist of oily components, and especially in recent years, makeup cosmetics that are hard to remove, such as waterproof mascara, have become popular. In order to thoroughly remove these, it is necessary to use an oil-type cleansing cosmetic, since it is appropriate to apply makeup to the oily component and wash it off. However, while oil-type cleansing cosmetics have excellent cleansing effects on greasy stains such as make-up, they are highly viscous and difficult to spread because they contain a lot of oily ingredients. There is a problem that a feeling of remaining stickiness arises and it becomes necessary to wash with a face wash again (W face wash). In cream/milk type cleansing cosmetics, the oil is finely and stably dispersed in water, so that the cleansing power inherent in the oil cannot be exerted and the cleansing power may not be sufficient. Liquid and lotion type cleansing cosmetics have low viscosity, so they are easy to apply to the face, and you can feel refreshed after rinsing, but many of them are dissatisfied with their cleansing power because they cannot contain a large amount of oily ingredients. . Therefore, in recent years, it has a high cleansing power, excellent spreadability when applied, and a refreshing feeling after rinsing, making it unnecessary to double cleanse, and it is possible to maintain long-term stability under a wide range of temperature conditions. There is a demand for cleansing cosmetics.

Especially in liquid lotion type cleansing cosmetics, by combining specific nonionic surfactants, it is possible to maintain cleansing power without adding oily ingredients, and to suppress stickiness and excessive degreasing power, resulting in long-lasting cleansing. By combining a nonionic surfactant, an oily component, and a water-soluble component in a specific ratio, there is no oily feeling during use, it can be washed off cleanly, and it is moist after cleansing. A product with excellent feeling (Patent Document 2) is being studied.

In addition, by blending a specific polyoxyalkylene glycol derivative or glycerin derivative, it is possible to remove makeup stains that are difficult to remove even with oily ingredients, and products with low stickiness and irritation after rinsing are also being investigated (Patent Documents 3 and 4). It is

JP 2010-70521 A International publication WO2015/005272 JP 2017-178868 A JP 2018-070499 A

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

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

The present invention has high cleansing power, spreads well when applied, and gives a refreshing feeling after rinsing, eliminating the need for double facial cleansing, and can maintain long-term stability over a wide range of temperature conditions. It provides a cleansing cosmetic.

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

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

The (A) polyoxypropylene glyceryl ether used in the present invention is not particularly limited. Ether (16P.O.), polyoxypropylene glyceryl ether (50P.O.) and the like can be mentioned, and one or more selected from these can be contained. Among them, polyoxypropylene glyceryl ether (8P.O.) is preferable from the viewpoint of being able to absorb makeup stains well when applied to the face. In addition, the P.O. O.D. indicates a polyoxypropylene chain and the number indicates the number of added moles.

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

The (B) ester oil that is liquid at 25° C. used in the present invention is not particularly limited, but examples include 2-ethylhexyl palmitate, 2-hexyldecyl myristate, 2-ethylhexyl stearate, 2-ethylhexyl myristate, and palmitin. Isopropyl myristate, cetyl 2-ethylhexanoate, octyldodecyl myristate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, caprylic-capric triglyceryl, oleyl oleate, diethylhexyl sebacate , 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 of being able to absorb make-up stains well when applied to the face.

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

The (A) polyoxypropylene glyceryl ether and the (B) ester oil that is liquid at 25 ° C. used in the present invention may be contained in the cleansing cosmetic, and the (A) polyoxypropylene glyceryl ether and the (B) ) The total amount of the ester oil that is liquid at 25°C is preferably 0.5 to 6% by mass, more preferably 2 to 5% by mass. If the total amount of (A) the polyoxypropylene glyceryl ether and (B) the ester oil that is liquid at 25° C. is less than 0.5% by mass, the cleansing power may be poor and makeup stains may not be thoroughly removed. On the other hand, if the amount exceeds 6% by mass, the viscosity increases and spreadability during application may deteriorate, making it difficult to remove make-up stains.

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

The cleansing cosmetic composition according to the present invention contains (C) an alkylglucoside. As a result, washing off is facilitated, and a refreshed feeling is obtained, thereby eliminating the need for double facial cleansing.

The (C) alkyl glucoside used in the present invention is not particularly limited, but includes, for example, decyl glucoside, lauryl glucoside, octyl glucoside, (caprylyl/capryl) glucoside, etc. One or more selected from these can contain Among them, decyl glucoside is preferable from the viewpoint of good spreadability when applied to the face.

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

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

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

One of the (D) polyhydric alcohols used in the present invention preferably contains polyethylene glycol from the viewpoint of facilitating rinsing and improving refreshing feeling, thereby eliminating the need for double face washing. Furthermore, it is preferable to use polyethylene glycol and a polyhydric alcohol other than the polyethylene glycol in combination, and from the viewpoint of compatibility with makeup stains, it is most preferable to use polyethylene glycol and dipropylene glycol in combination.

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

Among the (D) polyhydric alcohols used in the present invention, polyethylene glycol may be contained in the cleansing cosmetic, preferably 1 to 8% by mass, more preferably 2.5 to 6.5% by mass. . Among the polyhydric alcohols (D), if polyethylene glycol is less than 1% by mass, the cleansing cosmetic may not be thoroughly washed away, leaving a residual feeling on the skin. On the other hand, if the amount exceeds 8% by mass, the skin may feel slippery and may require double cleansing.

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

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

The cleansing cosmetic composition according to the present invention may contain, in addition to the aforementioned components, components commonly used in cosmetic products, as long as they do not impair the effects of the present invention. For example, oils such as higher alcohols and higher fatty acids, surfactants, lower alcohols, moisturizers, water-soluble polymers, antioxidants, water-soluble ultraviolet absorbers, chelating agents, preservatives, antibacterial agents, fragrances, animal and plant oils, Vitamins, plant extracts, inorganic salts and the like can be used, and one or more of these may be contained depending on the purpose.

EXAMPLES The present invention will be described in more detail with reference to Examples below, but the present invention is not limited to these Examples.

In the evaluation test shown in this specification, the results of various experiments carried out while variously changing the components contained in the cleansing cosmetics and their contents are shown below. Here, all the units indicating the content of each component of the cleansing cosmetics are % by mass, and were prepared by a conventional method. In addition, all appearances immediately after preparation are transparent.

In the invention shown in this specification, "cleansing power", "spreadability at the time of application", "necessity of double face wash", "appearance", "stability under low temperature conditions" and "stability under high temperature conditions ” was evaluated.

In the evaluation test shown in this specification, the "cleansing power", "spreadability at the time of application", and "necessity of double facial cleansing" were obtained by applying the obtained cleansing cosmetic to a waterproof mascara (trade name: Heroine Make Volume & Curl). Mascara Super WP, manufactured by Isehan Co., Ltd.) was used by 20 expert panelists, and the feeling of use was comparatively evaluated.

In the evaluation test shown in this specification, 120 g of the cleansing cosmetic obtained in the "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 this specification, the cleansing cosmetic obtained in "stability under low temperature conditions" and "stability under high temperature conditions" was sampled in a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) 120 g was filled in a container and allowed to stand in a constant temperature bath at 5°C and 50°C for 3 months.

Evaluation criteria for “cleansing power” ◎: 16 or more out of 20 people answered that makeup was firmly removed 〇: 11 to 15 people out of 20 answered that makeup was firmly removed The following answered that the makeup was firmly removed ×: 5 or less out of 20 answered that the makeup was firmly removed

Evaluation criteria for “smoothness at the time of application” ◎: 16 or more out of 20 people answered that they were able to blend in the makeup stains ○: 11 to 15 out of 20 people were able to blend in the makeup stains △: 6 to 10 people out of 20 answered that they were able to blend the makeup stains ×: 5 or less people out of 20 answered that they were able to blend in the makeup stains

Evaluation criteria for “necessity of double face wash” ◎: 16 or more out of 20 people answered that they do not need to double face wash ○: 11 to 15 people out of 20 answered that they do not need to double face wash △ : 6 to 10 out of 20 people answered that they do not need to double cleanse ×: 5 or less out of 20 people answered that they do not need to double cleanse

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

First Evaluation Test In the first evaluation test, cleansing cosmetics with various types, contents, and content ratios of (A) polyoxypropylene glyceryl ether and (B) ester oil liquid at 25° C. were evaluated. Table 1 shows the components, contents and evaluation results of the cleansing cosmetics.

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

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

In Examples 12 to 19, good results were obtained even when the type and content of the (C) alkylglucoside were varied.

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

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

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

In Examples 30 to 37, good results were obtained even when the type and content of polyethylene glycol in the (D) polyhydric alcohol were variously changed.

Formulation examples of the composition are given below. The compositions obtained according to the following formulation examples show "cleansing power", "spreadability at the time of application", "necessity of double facial cleansing", "appearance", "stability under low temperature conditions" and "high temperature conditions". Good results were obtained with respect to "stability at

(Example 38)
<Cleansing cosmetics>
Component content (mass%)
(A) Polyoxypropylene glyceryl ether (8P.O.) 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 (8E.O.) 5.000
Polyoxyethylene coconut oil fatty acid glyceryl (7E.O.) 10.000
Polyoxyethylene (caprylic/capric) glyceryl (6E.O.) 10.000
Microcitrus australasica 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
Perfume 0.300
Purified water 45.056
Total 100.000

The present invention has high cleansing power, spreads well when applied, and gives a refreshing feeling after rinsing, eliminating the need for double facial cleansing, and can maintain long-term stability over a wide range of temperature conditions. cleansing cosmetics can be provided.

Claims (3)

(A) polyoxypropylene glyceryl ether,
(B) an ester oil that is liquid at 25°C;
(C) an alkyl glucoside,
(D) contains a polyhydric alcohol,
The total amount of the content of the component (A) and the content of the component (B) is 0.5 to 6% by mass, and the content ratio of the component (A) and the component (B) is 1:4 to is 4:1;
The component (A) is at least one selected from polyoxypropylene glyceryl ether (8P.O.) and polyoxypropylene glyceryl ether (10P.O.),
The component (B) is at least one selected from 2-ethylhexyl palmitate and 2-hexyldecyl myristate,
The component (C) is at least one selected from decyl glucoside and (caprylyl/capryl) glucoside,
The content of the component (C) is 1 to 10% by mass,
The component (D) is any two or more selected from dipropylene glycol, 1,3-butylene glycol, 1, propylene glycol, polyethylene glycol 200 and polyethylene glycol 400,
The content of the component (D) is 8 to 32% by mass,
Polyoxyethylene coconut oil fatty acid glyceryl (7E.O.),
polyoxyethylene (caprylic/capric) glyceryl (6E.O.),
38.70 to 62.70% by mass of water
A cleansing cosmetic comprising : 2. The cleansing cosmetic according to claim 1, wherein the (D) polyhydric alcohol is a combination of polyethylene glycol and a polyhydric alcohol other than the polyethylene glycol. The cleansing cosmetic according to claim 1 or 2, wherein the content of polyethylene glycol is 1 to 8% by mass in the total composition of the cleansing cosmetic.