JPH07215819A - Cleansing agent - Google Patents

Abstract

PURPOSE:To obtain an excellent cleansing agent having frothing function in addition to cleansing function and giving a refreshed feeling in the cleansing of bare skin by combining a polyoxyethylene diester with a specific alkyl glycoside. CONSTITUTION:This cleansing agent is produced by combining a polyoxyethylene diester of formula I (R1 is a saturated or unsaturated higher aliphatic hydrocarbon group; (n) is 6-16) with an alkyl glycoside of formula II ((a) is 1-15; (b) is 7-19). The polyoxyethylene diester of formula I is especially preferably polyoxyethylene diisostearate or polyoxyethylene dioleate. The cleansing agent gives excellent feeling after and during use and exhibits high cleansing effect. It has a function to cleanly remove make-up cosmetics such as rouge, foundation, mascara and eye shadow and can be frothed by the addition of water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a makeup cleanser, and more particularly to improving its usability.

[0002]

2. Description of the Related Art A detergent composition, especially a facial cleanser,
It is necessary not only to wash away sebum and the like, but also to wash away various cosmetics and the like. For this reason, a person who has applied a makeup cosmetic containing oils such as lipstick, foundation, mascara, and eye shadow should first make a cleansing cream containing a large amount of oil that is easy to blend in with the makeup cosmetics as a first step when washing the face. , Cleansing oil, cleansing milk, cleansing gel, etc., after removing most of the makeup components using a face cleanser for removing makeup, as the second step, soap and cleansing foam etc. are bubbled to wash the bare skin. The residual oil content of the makeup remover cleaning agent used in the first step
By washing away the oil and dirt on the skin, I was satisfied with a refreshing or refreshing feeling.

[0003] In this way, two-step washing is required when using a makeup remover cream or the like containing a large amount of oil, even after rinsing with water or lukewarm water immediately after use, the oil remaining on the skin Is not sufficiently removed, and a refreshing feeling can not be obtained.Also, with a facial cleanser for bare skin washing such as soap or cleansing foam, which is used for foaming, a pigment covered with oil in makeup cosmetics This is because the coloring agent cannot be removed sufficiently from the skin.

On the other hand, in recent years, when quickness and simplicity of makeup are being demanded, a skin cleansing agent having a makeup removing effect and a cleansing and refreshing bare skin washing effect with only one operation is desired. ing. Examples of such a one-step skin cleansing agent include, for example, JP-A-63-1226.
Some are disclosed in Japanese Patent No. 18.

[0005]

However, the conventionally known one-step makeup remover cleansing agent is one in which the amount of oil remaining on the skin after rinsing is reduced, and soaps and cleansing foams are used. It was not possible to obtain the refreshing feeling and the satisfaction after washing the face obtained by washing the bare skin with bubbles. In other words, it is desirable to develop a cleansing agent that is capable of foaming at the same time as removing make-up, and that provides a refreshing feeling of bare skin washing. Oils and oily ingredients must be contained.On the other hand, detergents that give a feeling of foaming and refreshing, such as soap and cleansing foam, basically consist of ionic surfactants with high hydrophilicity. Therefore, even if you try to combine these ingredients to obtain both effects, in fact they will cancel each other out, not only almost no bubbles will be created, but also the effect of removing makeup will be impaired. The current situation is that we cannot get something satisfactory.

[0006] The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a makeup cleansing agent which is excellent in usability and feeling in use and has a high cleaning effect.

[0007]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventor has combined a polyoxyethylene diester with a specific alkyl glycoside to provide a makeup removing function. The inventors have found that a makeup cleansing agent having a foaming function and having a refreshing feeling of bare skin can be obtained, and completed the present invention.

That is, the makeup cleansing agent according to claim 1 of the present application is characterized by containing a polyoxyethylene diester represented by the general formula 3 and an alkyl glycoside represented by the general formula 4.

[Chemical 3] (In the formula, R is a saturated or unsaturated higher aliphatic hydrocarbon group,
n is an integer of 6-16. )

[0009]

(Wherein a represents an integer of 1 to 15 and b represents an integer of 7 to 19, respectively). In the present invention, the polyoxyethylene diester is polyoxyethylene diisostearate and / or polyoxyethylene diisostearate. It is preferably oxyethylene dioleate.

The structure of the present invention will be described in detail below. The average degree of polymerization of ethylene oxide of the polyoxyethylene diester having the basic structure shown in Chemical formula 3 used in the present invention is 6 to 16, and preferably 8 to 14. When the average degree of polymerization is lower than 6, foaming is insufficient, and when it is higher than 16, the effect of removing makeup is insufficient. Further, in the above Chemical formula 3,
R represents a saturated or unsaturated higher aliphatic hydrocarbon group,
The isostearyl group or the oleyl group is preferred from the viewpoint of blending with an aqueous detergent composition and from the viewpoint of makeup cleaning effect.

The alkyl glycoside used together with the polyoxyethylene diester can be represented by the above general formula (4). In Chemical Formula 4, b is preferably an integer of 7 to 19, and when b is 6 or less, the makeup removing effect is not sufficient, and when b is 20 or more, foaming and usability deteriorate. Further, the sugar moiety of the alkyl glycoside is glucose or an oligosaccharide having glucose as a basic unit, and in the chemical formula 4, a represents the number of glucose units and is an integer of 1 to 15, preferably an integer of 1 to 5. is there. If a is 16 or more, a sufficient cleaning effect cannot be obtained. The glycoside bond between glucose and the glycoside bond between the alkyl group and the sugar moiety are not particularly limited, and may be an α bond, a β bond or a mixture thereof. In the present invention, one or two or more of these alkyl glycosides can be optionally used.

In the present invention, the mixing ratio of the polyoxyethylene diester and the alkyl glycoside is in the range of 2: 1 to 1: 8 by weight, preferably 1: 1 to 1: 8. The amount is in the range of 1 to 80% by weight based on the total amount of the cleaning agent. When the blending ratio is outside this range, foaming is not sufficient when the polyoxyethylene diester is too much, and makeup is difficult to fit when the alkylglycoside is too much, and a satisfactory result cannot be obtained in any case.

In addition to the above-mentioned essential constituents, the makeup cleansing composition according to the present invention may contain, if necessary, components that are generally contained in cleansing compositions, cosmetics and the like. These components include polyhydric alcohols such as glycerin, 1,3-butanediol and propylene glycol, oils such as liquid paraffin and higher alcohols, anionic surfactants, cationic surfactants, amphoteric surfactants, Examples thereof include thickeners, moisturizers, preservatives, bactericides, ultraviolet absorbers, chelating agents, antioxidants, and fragrances.

As described above, the makeup cleansing agent of the present invention is
By coexisting polyoxyethylene diester and alkyl glycoside, makeup cosmetics such as lipsticks, foundations, mascaras and eye shadows can be satisfactorily removed, and at the same time, water can be added to make them lather.

[0015]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Prior to the examples, the evaluation method used in each example will be described.

Test Method for Makeup Removing Effect 2-Ethylhexylparamethoxycinnamic acid was added to the oily foundation as a marker. 1% included 0.
1 g is evenly applied to the inner part of the forearm in an area of 4 × 10 cm, dried for 30 minutes, and 0.5 g of the test sample is applied to the entire application part for about 20 seconds using a finger as in a normal makeup removing action. No, then rinsed with 35 ° C tap water without rubbing. After drying, the foundation remaining in the coated part was eluted with 2 ml of ethanol using a glass cup with a diameter of 2 cm, and the amount of 2-ethylhexylparamethoxycinnamic acid in ethanol was measured by ultraviolet absorption (310 nm). By doing, the effect of removing makeup was sought. Washing efficiency _{(%) = (A 2 -A} O) / (A 1 -A 0) × l00 A O: absorption of the eluate of the blank A _l: absorption of the eluate before cleaning A _2: eluate after washing Absorption evaluation of ○: Good make-up removal effect Cleaning efficiency 90% or more △: Make-up removal effect Normal Cleaning efficiency 60% or more ×: Poor make-up removal effect Cleaning efficiency 60% Satisfied

Foaming test method 40 ° C. in a cylindrical cylinder with a stirrer of 2500 m1 capacity
400 m1 of artificial hard water (70 ppm calcium carbonate) was added, and 40 g of the test sample and oil foundation O. After adding 1 g, the foam volume was measured after stirring at 4500 rpm for 1 minute. Evaluation ◯: Good foaming, foam volume of 1200 m1 or more △: Normal foaming, foam volume of 800 m1 or more ×: Poor foaming, foam volume of less than 800 m1

Sensory test (evaluation of refreshing feeling after use) Using each sample, 20 professional panelists conducted an actual use test for the presence or absence of a refreshing feeling on the skin after washing the face.
The evaluation method was based on the following criteria. O: 15 or more out of 20 professional panelists recognized that there was a refreshing feeling. Δ: 8 or more out of 20 professional panelists recognized that there was a refreshing feeling. X: 7 or less out of 20 professional panelists recognized that there was a refreshing feeling.

[0019]

[Table 1] ─────────────────────────────────── Test product 1 2 3 4 5 6 7 8 9 ─────────────────────────────────── Polyoxyethylene (6) Dioleate 20 18 15 13 10 7 5 2 0 Alkyl glycoside (a = 1, b = 7) 0 2 5 7 10 13 15 18 20 Total surfactant 20 ────────────────────────── ─────────── Remaining purified water ─────────────────────────────────── Make Dropping effect ○ ○ ○ ○ ○ ○ ○ ○ × Foaming ability × × △ ○ ○ ○ ○ ○ ○ Refreshing feeling × × × △ ○ ○ ○ ○ ○ ───────────────── ────────────────────

As described above, although polyoxyethylene diester (polyoxyethylene dioleate) alone has a relatively excellent makeup removing effect, it tends to lack foamability and a refreshing feeling. On the other hand, the alkyl glycoside alone has excellent foamability and a refreshing feel, but lacks the makeup removing effect. In the coexistence system of polyoxyethylene diester and alkyl glycoside, the mixing ratio is 2: 1 to 1: 8 by weight ratio, preferably 1: 1 to 1: 8, which is excellent in makeup removing effect and usability. Both can be demonstrated.

[0021]

[Table 2] ─────────────────────────────────── Test product 10 11 12 13 13 14 ──── ─────────────────────────────── Polyoxyethylene (3) Diisostearate 10 − − − − Polyoxyethylene ( 6) Diisostearate-10 --- Polyoxyethylene (12) Diisostearate--10-Polyoxyethylene (16) Diisostearate--10-Polyoxyethylene (20) Diisostearate Rate − − − − 10 Alkyl glycoside (a = 1, b = 12) 10 10 10 10 10 10 ───────────────────────────── ─────── Remaining purified water ───────────────────────────── ───── Makeup removal effect △ ○ ○ ○ × Foaming ability × ○ ○ ○ ○ Refreshing feeling △ ○ ○ ○ ○ ─────────────────────── ─────────────

As is clear from Table 2 above, the combination effect according to the present invention is specifically found in the polyoxyethylene diester in which the average degree of polymerization of ethylene oxide in the polyoxyethylene diester molecule is 6 to 16. It is a phenomenon.

[0023]

[Table 3] ──────────────────────────────────── Test product 15 16 17 18 19 20 21 ─ ─────────────────────────────────── Polyoxyethylene (12) Dioleate 5 5 5 5 5 5 5 Alkyl Glycosid (a = 1, b = 7) 10-------Alkyl glycosid (a = 5, b = 19)-10-----Alkyl glycosid (a = 10, b = 8)--10- ---Alkyl glycosides (a = 15, b = 10)---10---Alkyl glycosides (a = 18, b = 10)----10--Alkyl glycosides (a = 5, b = 23) -----10-Alkyl glycoside (a = 5, b = 5)-------10 ────────────────────────── ─────────── Purified water Residual ──────────────────────────────────── ─ Makeup remover And effect ○ ○ ○ ○ × △ × Foaming property ○ ○ ○ ○ △ × △ Refreshing feeling ○ ○ ○ ○ △ × △ ──────────────────────── As is clear from Table 3 above, the alkyl glycosides used in the present invention are those in which a is 1 to 1 in the chemical formula 4 above.
It turns out that it is preferable that it is an integer of 5 and b is an alkyl glycoside of 7 to 19. Next, various formulation examples were verified.

[0024]

[Table 4] ─────────────────────────────────── Test product 23 24 25 26 26 ───── ────────────────────────────── Polyoxyethylene diester Polyoxyethylene (8) Diisostearate 55 --- Pholyoxy Ethylene (12) Dioleate − − 5 − Polyoxyethylene (8) Dilaurate − − − 5 ─────────────────────────────── ───── Alkyl glycoside a = 2, b = 10 10 5 − − a = 3, b = 13 − 5 10 10 ───────────────────── ────────────── Other 1,3-butanediol 10 10-10 Purified water Residual ───────────────────── ─────── ────── Makeup remover ○ ○ ○ △ Foaming ○ ○ ○ ○ Refreshing feeling ○ ○ ○ ○ ───────────────────────── ───────────

As described above, synergistic effects are recognized between various polyoxyethylene diesters and various alkyl glycosides, and it is understood that the polyoxyethylene diester is preferably diisostearate and / or dioleate. .

Example 1 (1) Polyoxyethylene (12) diisostearate 8% by weight (2) Sodium lauryl methyl acetate 10 (3) Alkyl glycoside (a = 1, b = 7) 4 (4) Lauryl diethanolami Do 2 (5) 1,3-Butanediol 15 (6) Polyethylene glycol 1500 5 (7) Hydroxyethylcellulose 2.5 (8) Perfume proper amount (9) Purified water Residual production method (9) to (5), ( 6), (7) are dissolved, (2),
After mixing (3) and (4), (1) and (8) were added to obtain a gel makeup remover.

Example 2 (1) Polyoxyethylene (8) dioleate 5% by weight (2) Polyoxyethylene (8) diisostearate 1 (3) Alkyl glycoside (a = 5, b = 15) 3 (4 ) 1,3-Butanediol 10 (5) Sorbitol 8 (6) Methylcellulose 3 (7) Perfume proper amount (8) Purified water Residual method (4) to (6) are dissolved in (8), and (3) After mixing, (1), (2) and (7) were added to obtain a gel makeup remover. The gel-like makeup remover cleaning agents of Examples 1 and 2 were excellent in makeup removing effect and foaming property, and also had a very refreshing feeling after use.

[0028]

EFFECTS OF THE INVENTION As described above, the makeup cleansing agent according to the present invention is excellent in the effect of removing makeup by the coexistence of polyoxyethylene diester and alkyl glycoside, and at the same time, by adding water. It can be foamed and gives a refreshing feel to the skin after use.

[Chemical 4]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification number Internal reference number FI technical display location C11D 1:68) (72) Inventor Kiyomiyazawa 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Stock company Shiseido Daiichi Research Center

Claims (2)

[Claims] 1. A makeup cleanser containing a polyoxyethylene diester represented by the general formula 1 and an alkyl glycoside represented by the general formula 2. [Chemical 1] (In the formula, R is a saturated or unsaturated higher aliphatic hydrocarbon group,
n is an integer of 6-16. ) [Chemical 2] (In the formula, a represents an integer of 1 to 15 and b represents an integer of 7 to 19, respectively.) 2. The makeup cleansing agent according to claim 1,
A makeup cleansing agent, wherein the polyoxyethylene diester is polyoxyethylene diisostearate and / or polyoxyethylene dioleate.