JPH07304631A - Cleansing cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cleansing cosmetic having excellent removing effect on make-up, capable of being foamed by adding water, providing skin with a refreshing feeling after use. CONSTITUTION:This cleansing cosmetic comprises (A) an ethylene oxide addition polyoxypropylene glycol-based surfactant of formula I ((b) and (c) are each an integer) and (B) a maltitol ether of formula II (A is residue after removal of (a)XOH from maltitol; R1 and R2 are each H, an alkyl or an alkenyl and the total number of carbons of R1 and R2 is 6 to 22; (x) is 1 to 3) in the weight ratio of the component A:B=(2:1) to (1:8), preferably (1:1) to (1:8). A compound of formula III having 10-40% ethylene oxide ratio, 590-4,000 molecular weight of polyoxypropylene group and 3-15 HLB or a compound of formula IV having 10-40% ethylene oxide ratio is preferable as the surfactant of the component A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleansing cosmetic composition, 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, those who have applied makeup cosmetics containing oils such as lipsticks, foundations, mascaras, and eye shadows should first use a cleansing cream containing a large amount of oils that are easy to blend in with makeup cosmetics 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 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] As described above, the reason why two-step washing is required is that when a cream for removing makeup is used which contains a large amount of oil, the oil remaining on the skin can be immediately rinsed with water or lukewarm water after use. 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 cleaning agent is merely 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.

[0006] That is, it is desired to develop a cleansing agent which can make makeup and foam at the same time and can give a refreshing feeling of bare skin washing. It must contain a large amount of oil and oily ingredients, while soaps and cleansing foams that foam and give a refreshing feeling are basically ionic surfactants with high hydrophilicity. Since it is a main component, even if you try to combine both of these components to obtain both effects, in fact they will cancel each other out, and almost no bubbles will form, and the effect of removing makeup will also be impaired. The current situation is that we are not satisfied with what we get.

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

[0008]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have combined an ethylene oxide-added polyoxypropylene glycol-based surfactant with a specific maltitol ether. As a result, it was found that a cleansing cosmetic having a foaming function in addition to a makeup removing function and a refreshing feeling of bare skin washing can be obtained, and the present invention has been completed.

That is, the cleansing cosmetic composition according to claim 1 of the present application comprises an ethylene oxide-added polyoxypropylene glycol-based surfactant having a basic structure represented by the following chemical formula 5 and maltitol represented by the general chemical formula 6. It is characterized by containing ether.

Embedded image _{- (C 2 H 4 O)} c H - (C 3 H 6 O) b ( In formula 5, b, c are integers, respectively.)

[0010]

[Chemical 6] (In the formula 6, A is a residue obtained by removing x hydroxyl groups from maltitol, R ₁ and R ₂ are hydrogen atoms, an alkyl group or an alkenyl group, and the total carbon number of R ₁ and R ₂ is 6 to 22. Yes,
Further, x represents an integer of 1 to 3. )

In the present invention, the ethylene oxide-added polyoxypropylene glycol-based surfactant preferably has the structural formula shown below.

Embedded image _{HO (C 2 H 4 O)} a - (C 3 H 6 O) b - in the molecule of the _{(C 2 H 4 O) c} H ( Formula 7, the proportion of ethylene oxide is 10 to 4
0%, the molecular weight of the polyoxypropylene group is 950-40
00 and HLB are 3 to 15. )

Further, in the present invention, the ethylene oxide-added polyoxypropylene glycol-based surfactant preferably has the structural formula shown in the following chemical formula 8.

[Chemical 8] (In Chemical formula 8, b and c each represent an integer, and the content of ethylene oxide in the molecule is 10 to 40%.)

The structure of the present invention will be described in detail below. In the present invention, as the ethylene oxide-added polyoxypropylene glycol-based surfactant having the basic structure shown in Chemical formula 5, specifically, the trade name Pluronic shown in Chemical formula 7 or the trade name Tetronic shown in Chemical formula 8 is used. Etc.

This ethylene oxide-added polyoxypropylene-based surfactant has the following formula (7) in terms of the makeup cleaning effect of lipstick and the like in consideration of its blending with a detergent containing water as a main component. The ratio of ethylene oxide is 10 to 40%, and the molecular weight of polyoxypropylene group is 9
50 to 4000 and HLB are preferably 3 to 15.

In the present invention, the pluronic ethylene oxide-added polyoxypropylene-based surfactants include polyoxyethylene (6) polyoxypropylene (30) glycol and polyoxyethylene (3).
Examples thereof include polyoxypropylene (17) glycol, polyoxyethylene (12) polyoxypropylene (35) glycol, polyoxyethylene (30) polyoxypropylene (55) glycol and the like.

In the present invention, as a tetronic type ethylene oxide-added polyoxypropylene type surfactant, tetronic 702 (ethylene oxide in the total molecule: 20%, polyoxypropylene glycol molecular weight: 2501 to 3000), Tetronic 704
(Ethylene oxide in total molecule: 40%, molecular weight of polyoxypropylene glycol 2501-3000) and the like. In the present invention, among the ethylene oxide-added polyoxypropylene-based surfactants,
One kind or two or more kinds can be arbitrarily used.

Further, ethylene oxide-added polyoxy
For use with propylene glycol-based surfactants
Rutitol ether can be represented by the above general formula 6.
it can. In chemical formula 6, A is maltitol x water
R is a residue excluding the acid group, 1, R₂Is hydrogen source
A child, an alkyl group or an alkenyl group. Alkyl group
Examples of the alkenyl group include a methyl group, an ethyl group,
Sopropyl group, octyl group, lauryl group, myristyl group
Group, palmityl group, stearyl group, 2-ethylhexyl
Group, isostearyl group, oleyl group, palmitooleyl
Group, eicosenyl group, etc.
From the point of etc., R₁, R₂The total number of carbon atoms in the range is 6-22
Is preferred. X represents an integer of 3 or less
You When x is larger than 3, foaming is not sufficient. Book
According to the invention, is the maltitol ether
One kind or two or more kinds can be optionally used.

In the present invention, the mixing ratio of the ethylene oxide-added polyoxypropylene glycol-based surfactant and maltitol ether is from 2: 1 by weight.
1: 8, preferably in the range of 1: 1 to 1: 8, and the total amount of both is 1-80 in the total amount of the cleansing cosmetic.
It is in the range of% by weight. If the blending ratio is outside this range, foaming is not sufficient when the ethylene oxide-added polyoxypropylene glycol-based surfactant is too much, and makeup is difficult to adapt when too much maltitol ether is present, which is satisfactory in both cases. I can't get good results.

In the cleansing cosmetic composition according to the present invention,
In addition to the above-mentioned essential constituent components, if necessary, components that are generally blended in detergents, cosmetics and the like can be blended. 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, Thickener, moisturizer, antiseptic, bactericide, UV absorber,
Examples include chelating agents, antioxidants, and fragrances.

As described above, in the cleansing cosmetic composition of the present invention, the coexistence of the ethylene oxide-added polyoxypropylene glycol-based surfactant and maltitol ether makes it possible to make up makeup such as lipstick, foundation, mascara and eye shadow. At the same time that the cosmetic is removed well, it can be made to foam by adding water.

[0021]

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-ethylhexyl paramethoxycinnamic acid was used as a marker for oily foundation. 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.

The 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: after washing Absorption evaluation of eluate ○: Good make-up removal effect Cleaning efficiency 90% or more △: Makeup removal effect Normal Cleaning efficiency 60% or more X: Poor make-up removal effect Cleaning efficiency 60%

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.

[0026]

[Table 1] ─────────────────────────────────── Test product 1 2 3 4 5 6 7 8 9 ─────────────────────────────────── Polyoxyethylene (6) Polyoxypropylene (30) Polyol 20 18 15 13 10 7 5 20 0 Maltitol human oxydoxy decyl ether 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, the ethylene oxide-added polyoxypropylene glycol-based surfactant (Pluronic) alone has a relatively excellent makeup removing effect, but tends to lack foamability and a refreshing feeling. On the other hand, maltitol ether (maltitol hydroxydodecyl ether) alone has excellent foamability and a refreshing feeling, but lacks a makeup removing effect. And
In the coexistence system of the ethylene oxide-added polyoxypropylene glycol-based surfactant and maltitol ether, the mixing ratio is 2: 1 to 1: 8 by weight ratio, preferably 1: 1 to 1: 8, and excellent makeup is obtained. Both the dropping effect and the usability can be exhibited.

[0028]

[Table 2] ───────────────────────────── Test product 10 11 12 ───────────── ───────────────── Polyoxyethylene (10) Polyoxypropylene (30) Polyol 10 --- Polyoxyethylene (100) Polyoxyethylene (35) Polyol-10-Poly Oxyethylene (8) Polyoxypropylene (55) Glycol --- 10 Maltitol Human oxydoxy decyl ether 10 10 10 ─────────────────────────── ── Purified water balance ───────────────────────────── Makeup removing effect △ × △ Foaming × × × Refreshing feeling × △ △ ─────────────────────────── ─

As is clear from Table 2 above, the combination effect according to the present invention is that the proportion of ethylene oxide in the molecule is 10 to 40% and the polyoxypropylene group has a molecular weight of 950 to 4000. This is a phenomenon that is unique to ethylene polyoxypropylene glycol.

[0030]

[Table 3] ─────────────────────────────────── Test product 13 14 15 16 16 17 ──── ─────────────────────────────── Polyoxyethylene (3) Polyoxypropylene (17) Polyol 10 10 10 10 10 10 Multi Tall human oxyhexyl ether 10 ---- Maltitol human oxyoctyl ether -10 --- Maltitol human oxycetyl ether -10-Malthitol human oxybehenyl ether -10- Maltitol human oxyhexacosyl ether ----- ─────────────────────────────────── Purified water Residue ──────────── ─────── ───────────────── Makeup removing effect × ○ ○ ○ ○ Foaming ability × ○ ○ ○ × Refreshing feeling △ ○ ○ ○ × ────────── ─────────────────────────

As is clear from Table 3, the maltitol ether used in the present invention is preferably a maltitol ether in which the total number of carbon atoms of R ₁ and R ₂ in the above Chemical Formula 6 is 6 to 22. I understand.

Next, various formulation examples were verified.

[Table 4] ──────────────────────────────────── Test product 18 19 20 21 22 ─── ───────────────────────────────── ethylene oxide addition polyoxypropylene glycol surfactant polyoxyethylene (6) Polyoxypropene glycol recall (30) 2 5 6 4-Tetronic 702--6-6 ─────────────────────────────── ────── Maltitol ether Maltitol human oxymyristyl ether 5 10 12 32 15 Maltitol human oxydoxy dimethyl ether 5----────────────────────── ─────────────── Other 1,3-butanediol 8 10-10 10 Purified water Residual ──────── ─────────────────────────── Makeup remover ○ ○ ○ ○ ○ Foaming ○ ○ ○ ○ ○ Refreshing feeling ○ ○ ○ ○ ○ ────────────────────────────────────

As described above, synergistic effects are recognized between various ethylene oxide-added polyoxypropylene glycol-based surfactants and various maltitol ethers.

Example 1 (1) Polyoxyethylene (10) Polyoxypropylene (30) Glycol 8% by weight (2) Betaine lauryl dimethylacetate 10 (3) Maltitol hydroxymyristyl ether 4 (4) Lauryl diethanolamide 2 ( 5) 1,3-Butanediol 15 (6) Polyethylene glycol 1500 5 (7) Hydroxyethyl cellulose 2.5 (8) Perfume proper amount (9) Purified water balance

(5), (6) and (7) are dissolved in the manufacturing method (9) to obtain (2),
After mixing (3) and (4), (1) and (8) were added to obtain a gel cleansing cosmetic composition.

Example 2 (1) Polyoxyethylene (35) Polyoxyprophylene (40) Glycol 1% by weight (2) Polyoxyethylene (30) Polyoxyprophylene (30) Glycol 4 (3) Maltitol hydroxydodecyl ether 3 (4) l, 3-Butanediol 10 (5) Sorbitol 8 (6) Methylcellulose 3 (7) Perfume proper amount (8) Purified water residue

After dissolving (4) to (6) in the manufacturing method (8) and mixing (3), (1), (2) and (7) were added to obtain a gel cleansing cosmetic composition. . The gel-like cleansing cosmetic compositions of Examples 1 and 2 were excellent in makeup removing effect and foaming property, and also had a very refreshing feeling after use.

[0038]

As described above, the cleansing cosmetic composition according to the present invention is excellent in the effect of removing makeup by coexisting the ethylene oxide-added polyoxypropylene glycol surfactant and maltitol ether. At the same time, it can be foamed by adding water, giving a refreshing feel to the skin after use.

─────────────────────────────────────────────────── ─── 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 (3)

[Claims] 1. A cleansing cosmetic composition comprising an ethylene oxide-added polyoxypropylene glycol-based surfactant having a basic structure represented by the following chemical formula 1 and maltitol ether represented by the general formula 2. ## STR1 ## _{- (C 3 H 6 O)} b - (. In formula 1, b, c are integers, _{respectively) (C 2 H 4 O)} c H ## STR2 ## (In Chemical Formula 2, A is a residue obtained by removing x hydroxyl groups from maltitol, R ₁ and R ₂ are hydrogen atoms, an alkyl group or an alkenyl group, and the total carbon number of R ₁ and R ₂ is 6 to 22. Yes,
Further, x represents an integer of 1 to 3. ) 2. The cleansing cosmetic composition according to claim 1, wherein the ethylene oxide-added polyoxypropylene glycol-based surfactant has a structural formula shown in Chemical Formula 3 below. ## STR3 ## _{HO (C 2 H 4 O)} a - (C 3 H 6 O) b - in the molecule of the _{(C 2 H 4 O) c} H ( Formula 3, the proportion of ethylene oxide is 10 to 4
0%, the molecular weight of the polyoxypropylene group is 950-40
00 and HLB are 3 to 15. ) 3. The cleansing cosmetic composition according to claim 1, wherein the ethylene oxide-added polyoxypropylene glycol-based surfactant has a structural formula shown in the following chemical formula 4. [Chemical 4] (In Chemical formula 4, b and c each represent an integer, and the ratio of ethylene oxide in the molecule is 10 to 40%.)