JP5610682B2 - Aqueous cleansing cosmetics - Google Patents

Description

  The present invention relates to an aqueous cleansing cosmetic.

  2. Description of the Related Art Conventionally, cleansing cosmetics include oil-based cleansing cosmetics that use an oil agent as a fat and oil stain removing component (for example, see Patent Document 1). However, when these oils are used, the effect of removing makeup and other oil stains is excellent. is there. In addition, there is a problem that rough skin occurs due to excessive degreasing.

  Therefore, in recent years, an aqueous cleansing cosmetic using a nonionic surfactant has been used as a fat and oil stain removing component that has excellent usability and can be easily wiped off or washed away. For example, a hypoallergenic cleansing composition containing a hydrophilic nonionic surfactant and water and not containing an oily substance (see, for example, Patent Document 2), a nonionic surfactant and an alkyl methacrylate methacrylate copolymer Cleansing cosmetics containing 2% by weight or less of the oil component (see, for example, Patent Document 3), two types of nonionic surfactants having an HLB of less than 12 and 12 or more, and an alkyl methacrylate A cleansing cosmetic containing a copolymer and a polyhydric alcohol (for example, see Patent Document 4) has been proposed.

  However, although it can be easily wiped off or washed away based on these attempts, there is a problem that it is inferior in the effect of removing oil stains such as makeup as compared with an oil agent. In addition, when an amount of a nonionic surfactant that exhibits a sufficient effect for removing oil and fat stains such as makeup is used, there is a problem that undesired irritation occurs to the skin and ocular mucosa. In addition, there is a problem that rough skin occurs due to excessive degreasing and it is difficult to obtain a preferable moist feeling.

JP-A-4-308518 JP-A-8-301725 JP-A-9-87139 JP 2002-284672 A

  The present invention has been made in view of the above-described prior art, has no irritation to skin and eye mucous membranes, can remove oily and dirt such as makeup, and suppresses rough skin caused by stickiness and excessive degreasing. An object of the present invention is to provide an aqueous cleansing cosmetic that imparts a lasting moist feeling.

That is, the present invention
[1] (A) 70 to 97% by weight of water, (B) polyoxyethylene (capryl / capric acid) glyceryl having 6 or 8 added moles of ethylene oxide, (C) 7 added moles of ethylene oxide The polyoxyethylene coconut oil fatty acid glyceryl and (D) polyhydric alcohol, the content of the component (B) is 0.1 to 8% by weight, and the content of the component (C) is 0.1 to 0.1% by weight. 8 percent by weight, and the content ratio by weight of (B) component (C), B: C = 4: 1~1 : aqueous cleansing cosmetic composition you being a 4,
[2] according to the above [1], wherein a containing no substantive ethanol aqueous cleansing cosmetic composition, and (3) above, wherein the no rinse (1) or according to (2) It relates to an aqueous cleansing cosmetic.

  The aqueous cleansing cosmetic of the present invention exhibits an effect that it can suppress irritation to the skin and eye mucous membrane peculiar to a nonionic surfactant, despite exhibiting a remarkably excellent oily and dirt removing effect. In addition, there is an effect that a rough feeling due to stickiness and excessive degreasing is suppressed and a continuous moist feeling is imparted.

The aqueous cleansing cosmetic of the present invention comprises (A) 70 to 97% by weight of water, (B) polyoxyethylene (capryl / capric acid) glyceryl having 6 or 8 added moles of ethylene oxide, and (C) ethylene oxide. Polyoxyethylene coconut oil fatty acid glyceryl having an added mole number of 7 and (D) a polyhydric alcohol.

  The water of component (A) is not particularly limited as long as it can be used as a cosmetic raw material, but purified water is usually used. The content of the component (A) in the present invention is 70 to 97% by weight, preferably 75 to 97% by weight in the cosmetic from the viewpoint of being aqueous. The reason is that if it is less than 70% by weight, a sticky feeling is generated and the feeling of use is inferior, and if it exceeds 97% by weight, a sufficient cleansing effect cannot be obtained.

(B) addition mole number of the components of polyoxyethylene ethylene oxide are polymerized (caprylic / capric acid) glyceryl, from the viewpoint of solubility in the perspective and water greasy soil removal, Ri 4-10 der, preferably the Ru 6 or 8 der.

  In addition, a commercial item can be used for (B) component as it is. Specifically, for example, CETIOL HE810 (trade name, manufactured by Cognis Japan), Softiggen 767 (trade name, manufactured by Sasol), L. A. S (trade name, manufactured by Gatefosse) can be exemplified.

The content of component (B) is not particularly limited as long as the desired effect is applied, usually, from the viewpoint of imparting excellent cleansing effect, the cosmetic composition, 0.1 wt% or more, more preferably Is 0.5% by weight or more. Further, in view of reducing the excessive degreasing, 8 wt% or less, more preferably 5 wt% or less. From these viewpoints, the content of the component (B) is 0.1 to 8 % by weight , more preferably 0.5 to 5% by weight.

(C) number of moles of added components polyoxyethylene coconut oil fatty acid to be polymerized ethylene oxide glyceryl, from the viewpoint of solubility in the perspective and water-oil greasy soil removal, it is 7.

In addition, a commercial item can be used for (C) component as it is. More specifically, for example, CETIOL H E (trade name, manufactured by co-Gunisu Japan Co., Ltd.), M fine oil COG-7M (trade name, manufactured by Miyoshi Oil & Fat Co., Ltd.), Guriserokkusu HE (trade name, Croda Japan Co., Ltd.), etc. Can be illustrated.

The content of component (C) is not particularly limited as long as the desired effect is applied, usually, from the viewpoint of imparting excellent cleansing effect, the cosmetic composition, 0.1 wt% or more, more preferably Is 0.5% by weight or more. From the viewpoint of reducing the skin irritation and eye irritation, 8 wt% or less, more preferably 5 wt% or less. From these viewpoints, the content of the component (C) is 0.1 to 8 % by weight , more preferably 0.5 to 5% by weight.

  In the cosmetic, the content ratio of the component (B) to the component (C) is preferably adjusted within a range of B: C = 4: 1 to 1: 4, more preferably B: C = 3: 1 to 1: 3. As a result, it is possible to exert a remarkably excellent effect in removing oil and fat stains such as makeup, and it is also possible to suppress irritation to the skin and ocular mucosa.

  (D) As a polyhydric alcohol of a component, glycols, glycerol, etc. are mentioned. Specific examples of glycols include, for example, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,2- Examples include pentanediol, 1,2-hexanediol, 1,2-octanediol, 1,2-decanediol, and the like. Examples of glycerins include glycerin, concentrated glycerin, diglycerin, and polyglycerin. These components may be used alone or in combination of two or more.

  The content of the component (D) is not particularly limited as long as a desired effect is imparted, but usually 1% by weight or more is preferable in the cosmetic from the viewpoint of imparting a moist feeling, and more preferably 2% by weight. % Or more. Moreover, from a viewpoint of reducing a sticky feeling, 15 weight% or less is preferable, More preferably, it is 12 weight% or less. From these viewpoints, the content of the component (D) is preferably 1 to 15% by weight, more preferably 2 to 12% by weight.

  The aqueous cleansing cosmetic composition of the present invention can contain a styrenic polymer from the viewpoint of suppressing stickiness and improving the feeling of use. Specific examples of the styrenic polymer include vinyl acetate / styrene copolymer, vinyl pyrrolidone / styrene copolymer, alkyl acrylate / styrene copolymer, alkyl acrylate / acrylonitrile / styrene copolymer, acrylate amide. -A styrene copolymer etc. can be illustrated. Further, an emulsion in which these copolymers are dispersed in an aqueous medium may be used. These components may be used alone or in combination of two or more. Suitable styrenic polymers include vinylpyrrolidone / styrene copolymer, alkyl acrylate / styrene copolymer, acrylamide / amide, from the viewpoint of reducing the stickiness during cleansing and maintaining the moist feeling after cleansing. It is preferable to use a styrene copolymer.

  In addition, the styrene polymer can use a commercial item as it is. As a commercial item of a vinylpyrrolidone / styrene copolymer, for example, Antara 430 (trade name, manufactured by ISP Corporation) and the like can be exemplified. Moreover, as a commercial item of the alkyl acrylate / styrene copolymer, for example, Accusol OP301 (trade name, manufactured by Rohm and Haas) can be exemplified. Examples of commercially available acrylic amide / styrene copolymers include, for example, Accusol OP303P (trade name, manufactured by Rohm and Haas), Yodosol GH52 (trade name, manufactured by Nippon SC). Can do.

  The content of the styrenic polymer is preferably 0.01 to 3% by weight, more preferably 0.05 to 2% by weight in the cosmetic from the viewpoint of suppressing stickiness and improving the feeling of use.

  Moreover, it is preferable that the aqueous cleansing cosmetic of the present invention does not substantially contain ethanol. As a result, it is possible to reduce irritation to the skin without rinsing with lukewarm water and post-face washing after the treatment. In the present invention, “substantially does not contain ethanol” means “does not contain ethanol separately”, and does not exclude a trace amount of ethanol contained in each compounding component. .

  In the aqueous cleansing cosmetic of the present invention, within the range not impairing the effects of the present invention, in addition to the above-described components, components commonly used in cosmetics, such as ultraviolet absorbers, powders, antioxidants, Additives such as preservatives, fragrances, colorants, chelating agents, refreshing agents, thickeners, plant extracts, vitamins, neutralizing agents, amino acids, and the like can be appropriately blended depending on the use and purpose. .

  The aqueous cleansing cosmetic composition of the present invention is suitably used as a face massage agent and makeup remover from the viewpoint of excellent oil and fat removal by facial sebum and makeup. In addition, as a method of use, from the viewpoint of suppressing the feeling of tightness of the skin after use, and from the viewpoint of suppressing dry skin due to excessive degreasing, do not wash away with warm water after treatment and do not wash the face. preferable. More preferable usage examples include a method of impregnating a cotton or non-woven fabric with an aqueous cleansing cosmetic and performing treatment on the application site, or a method of wiping the aqueous cleansing cosmetic on the application site and then wiping with cotton or non-woven fabric. can do.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. The blending amount represents “% by weight” unless otherwise specified. In the table, the number of added moles of polyoxyethylene is shown in parentheses.

(Sample preparation 1)
According to the composition described in Table 1 and Table 2, each of the aqueous cleansing cosmetics of Examples 1 to 5 and Comparative Examples 1 to 5 was prepared according to a conventional method and subjected to the following evaluation. The results are shown in Table 1 and Table 2, respectively.
In addition, all evaluation was implemented on the constant conditions of constant temperature and humidity of 23 degreeC and 60% of humidity.

(Test Example 1: Evaluation of makeup dirt (foundation) removal)
Black urethane cloth (trade name: Supprare, manufactured by Idemitsu Petrochemical Co., Ltd.) 2cm x 10cm, and evenly spread 0.3g of foundation (product name: Diaferne Plus Creme Tandosur <Natural>, manufactured by Piase Laboratories) over the entire surface. Dried for one day and night. Next, 3 mL of the aqueous cleansing cosmetic obtained in each Example and each Comparative Example was impregnated into cotton, and a load of 25 gf was applied to the sample-containing cotton using a friction tester (KES-SE, manufactured by Kato Tech Co., Ltd.). The urethane cloth was pulled over 10 cm.

In addition, evaluation evaluated the area value from which the foundation | substrate was removed in the urethane cloth by image analysis, calculated the removal rate by the following formula, and evaluated it according to the following evaluation criteria.
Removal rate (%) = (Area value from which foundation is removed / Area value of urethane cloth) × 100

<Evaluation criteria for removing makeup dirt (foundation)>
◎: Removal rate is 80% or more ○: Removal rate is 50% or more and less than 80% Δ: Removal rate is 20% or more and less than 50% ×: Removal rate is less than 20%

(Test Example 2: Evaluation of makeup stain (mascara) removal)
With 20 female evaluation panels that regularly use waterproof mascara (trade name: Black Icon Separate Curl Mascara <Black>, manufactured by Bukos Co., Ltd.), the water-based cleansing cosmetics obtained in each Example and each Comparative Example are actually used as mascara. They were used as if they were wiped off, and the mascara removal effect was sensory evaluated according to the following evaluation criteria.

<Evaluation criteria for removing makeup stains (mascara)>
◎: Reply if 16 or more out of 20 people are excellent in removal effect ○: Reply if 11-15 out of 20 people are excellent in removal effect △: Reply if 6-10 out of 20 people are excellent in removal effect ×: 20 5 or less of the names responded that they had excellent removal effects

(Test Example 3: Evaluation of stimulation)
Twenty female evaluation panels with makeup were made to impregnate cotton with the water-based cleansing cosmetics obtained in each example and each comparative example, and used to actually wipe off the makeup. Sensory evaluation was performed according to the following evaluation criteria for “stimulation” and “ocular mucosal irritation”. Note that “skin irritation” refers to a temporary “feeling of tingling” or “hotness” felt immediately after cleansing and after 5 minutes. Further, “eye mucous membrane irritation” refers to “feeling tingling” or “tingling sensation” that is felt when the eyes are rubbed into the eyes during cleansing.

<Evaluation criteria for skin irritation>
◎: More than 16 out of 20 responded that there was no skin irritation ○: 11-15 out of 20 responded that there was no skin irritation △: 6-10 out of 20 responded that there was no skin irritation ×: 20 Less than 5 of the respondents answered no skin irritation

<Evaluation criteria for ocular mucosal irritation>
◎: More than 16 out of 20 responded that there was no ocular mucosal stimulation ○: 11-15 out of 20 responded that there was no ocular mucosal stimulation △: 6-10 out of 20 responded that there was no ocular mucosal irritation ×: 5 or less of 20 responded that there was no ocular mucosal irritation

(Test Example 4: Evaluation of feeling of use)
The 20 panelists evaluated the stickiness immediately after cleansing in Test Example 3 and the moist feeling of the skin after 1 hour according to the following evaluation criteria.

<Evaluation criteria for stickiness>
◎: 16 or more of 20 people answered that there was no stickiness ○: 11-15 of 20 people answered that there was no stickiness △: 6-10 of 20 people answered that they did not feel sticky ×: 20 5 or less people answered that there was no stickiness

<Evaluation criteria for moist feeling>
◎: More than 16 out of 20 people feel moist and the effect is sustained ○: 11 to 15 out of 20 people feel moist and the effect is sustained △: 20 6-10 of the names have a moist feeling and the effect is to be sustained. ×: 5/20 of the 20 respondents have a moist feeling and the effect is sustained.

(Test Example 5: Evaluation of rough skin prevention effect)
By the 20 evaluation panels, the aqueous cleansing cosmetics obtained in each Example and each Comparative Example were used once a day, and the skin condition after 10 days of continuous use was subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for rough skin>
◎: More than 16 out of 20 responded that there was no rough skin ○: 11-15 out of 20 responded that there was no rough skin △: 6-10 out of 20 responded that there was no rough skin ×: 5 out of 20 Answer that there is no rough skin

  From the results of Tables 1 and 2, the water-based cleansing cosmetics of each example, although compared with those of each comparative example, have a much superior effect on the removal of makeup stains. It can be seen that there is no irritation and ocular mucosal irritation. Moreover, it turns out that the water-based cleansing cosmetic of each Example does not have a sticky feeling, maintains a moist feel, and does not cause rough skin during continuous use. On the other hand, from Example 1, the aqueous cleansing cosmetic of Comparative Example 1 in which the component (B) is not simply added, and the Comparative Example in which the component (B) and the component (C) are not simply added from Example 5. It can be seen that the water-based cleansing cosmetic No. 5 has no effect of removing makeup stains. Further, from Example 2, the aqueous cleansing cosmetic of Comparative Example 2 in which the component (C) is not simply blended, or from Examples 3 and 4, the component (B) or the component (C) is not blended. The aqueous cleansing cosmetics of Comparative Examples 3 and 4 with the same total amount of the agent have a specific makeup stain removing effect, but may cause undesired irritation to the skin and ocular mucosa, and may cause stickiness. It can be seen that it causes rough skin by continuous use.

  Hereinafter, formulation examples of the aqueous cleansing cosmetic according to the present invention will be shown. The content is% by weight.

(Prescription Example 1)
Polyoxyethylene (capryl / capric acid) glyceryl 3.0
Polyoxyethylene palm oil fatty acid glyceryl 2.0
N- [3-alkyl (12,14) oxy-2-hydroxypropyl]
-L-arginine hydrochloride 0.2
1,3-butylene glycol 5.0
1,2-octanediol 0.1
Sodium dihydrogen phosphate 0.09
Disodium hydrogen phosphate 0.01
Tocopherol acetate 0.1
Soybean extract 0.1
Phenoxyethanol 0.2
Purified water 89.2
Total 100.0

(Prescription example 2)
Polyoxyethylene (capryl / capric acid) glyceryl 4.0
Polyoxyethylene palm oil fatty acid glyceryl 2.0
N- [3-alkyl (12,14) oxy-2-hydroxypropyl]
-L-arginine hydrochloride 0.25
1,3-butylene glycol 7.0
1,2-octanediol 0.05
Vinylpyrrolidone / styrene copolymer emulsion 0.5
Citric acid 0.05
Trisodium citrate 0.2
Phenoxyethanol 0.3
Tocopherol acetate 0.1
Purified water 85.55
Total 100.0

(Prescription Example 3)
Polyoxyethylene (capryl / capric acid) glyceryl 2.0
Polyoxyethylene palm oil fatty acid glyceryl 2.0
N- [3-alkyl (12,14) oxy-2-hydroxypropyl]
-L-arginine hydrochloride 0.15
1,3-butylene glycol 7.0
Polyethylene glycol 20000 2.0
Glycerin 10.0
1,2-octanediol 0.05
Vinylpyrrolidone / styrene copolymer 0.5
Citric acid 0.05
Trisodium citrate 0.2
Phenoxyethanol 0.3
Tocopherol acetate 0.1
Purified water 75.65
Total 100.0

Claims (3)

(A) 70 to 97% by weight of water, (B) polyoxyethylene (capryl / capric acid) glyceryl having 6 or 8 added moles of ethylene oxide, (C) poly having 7 added moles of ethylene oxide Oxyethylene coconut oil fatty acid glyceryl and (D) polyhydric alcohol ,
The content of the component (B) is 0.1 to 8% by weight, the content of the component (C) is 0.1 to 8% by weight, and the weight content of the components (B) and (C) ratio, B: C = 4: 1~1 : aqueous cleansing cosmetic composition you being a 4. The aqueous cleansing cosmetic according to claim 1, which is substantially free of ethanol. The aqueous cleansing cosmetic according to claim 1 or 2, which is not washed away.