JP2008056609A - Cleansing cosmetic material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleansing cosmetic material excellent in effect for removing oil stains such as makeup and the like without containing ethanol, generating no sticky feeling and no skin roughness caused by excessive defatting and having excellent antifouling stability without adding an antifouling agent such as parabens or the like. <P>SOLUTION: The cleansing cosmetic material is a composition comprising (A) water in 70-90wt.%, (B) a polyoxyethylene fatty acid glyceryl, (C) a polyhydric alcohol, (D) an N-palm oil fatty acid acyl-L-arginine ethyl-pyrrolidone carboxylic acid salt and/or an N-[3-alkyl(12, 14)oxy-2-hydroxypropyl]-L-arginine hydrochloric acid salt and does not essentially contain ethanol and parabens. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cleansing cosmetic. More specifically, the present invention relates to a cleansing cosmetic substantially free of ethanol and parabens.

  Conventionally, cleansing cosmetics containing oils and nonionic surfactants have been used from the viewpoint of excellent cleansing effect.

  In the case of cleansing cosmetics using an oil agent, it is excellent in the removal effect against oil and fat stains such as makeup, but after wiping or washing away, the oil agent remains and has a sticky feeling, and it must be washed again with a facial cleanser. There is a problem that rough skin occurs due to excessive degreasing. On the other hand, cleansing cosmetics using nonionic surfactants can be easily wiped off or washed away, but have a problem that they are inferior in the effect of removing oil stains such as makeup. In addition, when a lower alcohol is contained as a solubilizer, there is a problem of having skin irritation.

  In order to solve such problems, attempts have been made to increase the effect of removing oil stains without using an oil agent. For example, a hypoallergenic cleansing composition containing a hydrophilic nonionic surfactant and water and not containing an oily substance (see, for example, Patent Document 1) has been proposed. Attempts have also been made to reduce irritation caused by lower alcohols. For example, an aqueous gel cleansing composition containing a nonionic surfactant and water and not containing a lower alcohol (see, for example, Patent Document 2) has been proposed.

  However, although it is possible to improve the feeling of use such as stickiness and the stimulation by lower alcohols based on these attempts, the familiarity and removal effect on fat and oil stains are still unsatisfactory. Nonionic surfactants are known to inactivate the antiseptic and antifungal effects of preservatives such as parabens. For this reason, in cosmetics using nonionic surfactants, antiseptics are used. There is also a problem that it is necessary to contain at a high concentration.

JP-A-8-301725 JP-A-11-152205

  The present invention has been made in view of the above-described prior art, and is excellent in the removal effect against oil and fat stains such as makeup without containing ethanol, does not cause stickiness and rough skin due to excessive degreasing, and is a paraben. It is an object of the present invention to provide a cleansing cosmetic material having excellent antiseptic stability without blending a preservative such as a kind.

That is, the present invention
[1] (A) 70-90% by weight of water, (B) polyoxyethylene fatty acid glyceryl, (C) polyhydric alcohol, (D) N-coconut oil fatty acid acyl-L-arginine ethyl pyrrolidone carboxylate and / or Or a composition comprising N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride, characterized by being substantially free of ethanol and parabens. Cleansing cosmetics,
[2] The cleansing cosmetic according to claim 1, wherein the component (B) is polyoxyethylene (capryl / capric acid) glyceryl, and
[3] The cleansing cosmetic according to [1] or [2], which is not washed away.

  The cleansing cosmetic composition of the present invention has no skin irritation and is excellent in the removal effect against oily and dirt such as makeup, and has an effect of suppressing stickiness and rough skin and imparting a continuous moist feeling. In addition, there is an effect of having excellent antiseptic stability without blending a preservative at a high concentration.

  The cleansing cosmetic composition of the present invention includes (A) water, (B) polyoxyethylene fatty acid glyceryl, (C) polyhydric alcohol, and (D) N-coconut oil fatty acid acyl-L-arginine ethyl pyrrolidone carboxylic acid. Salt and / or N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride and substantially free of ethanol and paraben derivatives.

  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 90% by weight, preferably 80 to 90% by weight, in the composition. The reason is that when the amount is less than 70% by weight, a sticky feeling is generated and the feeling of use is inferior, and when the content exceeds 90% by weight, a cleansing effect cannot be obtained.

  Examples of the fatty acid part of component (B) include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and the like. Examples thereof include oxyethylene monofatty acid glyceryl and / or polyoxyethylene difatty acid glyceryl. These components may be used alone or in appropriate combination of two or more. As a suitable component (B), polyoxyethylene (capryl / capric acid) glyceryl is preferably used from the viewpoint of excellent cleansing effect. The number of added moles of ethylene oxide polymerized to these components is not particularly limited.

  The content of the component (B) is not particularly limited as long as a desired effect is imparted, but usually 1% by weight or more is preferable in the composition from the viewpoint of imparting an excellent cleansing effect, and more preferably. 3% by weight or more. Moreover, from a viewpoint of suppressing a sticky feeling, 10 weight% or less is preferable, More preferably, it is 8 weight% or less. From these viewpoints, the content of the component (B) is preferably 1 to 10% by weight, more preferably 3 to 8% by weight in the composition.

  In addition, a commercial item can also be used for (B) component. Specifically, for example, CETIOL HE810 (trade name, manufactured by Cognis Japan) can be exemplified.

  Examples of the component (C) include glycols and glycerins. 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, polyglycerin and the like. These components may be used singly or in appropriate combination of two or more.

  The content of the component (C) is not particularly limited as long as a desired effect is imparted, but usually 1% by weight or more is preferable in the composition from the viewpoint of imparting a persistent moist feeling, and more preferably. Is 2% by weight or more. Moreover, from a viewpoint of suppressing a sticky feeling, 12 weight% or less is preferable, More preferably, it is 10 weight% or less. From these viewpoints, the content of the component (C) is preferably 1 to 12% by weight, more preferably 2 to 10% by weight in the composition.

  Component (D), N-coconut oil fatty acid acyl-L-arginine ethyl pyrrolidone carboxylate, is obtained by esterifying a condensate of L-arginine and coconut oil fatty acid to form DL-pyrrolidone carboxylate. N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride is obtained by subjecting L-arginine and C (12,14) glycidyl ether to a condensation reaction, and using hydrochloric acid. It is a hydrated hydrochloride. These components can further improve the persistent moist feeling. Furthermore, it also has a preservative effect, and the cleansing cosmetic composition of the present invention can impart an excellent antiseptic effect at a low concentration without causing inactivation of the antiseptic and antifungal effect.

  The content of the component (D) is not particularly limited as long as a desired effect is imparted, but usually 0 in the composition from the viewpoint of further improving the persistent moist feeling and imparting an antiseptic effect. 0.01% by weight or more is preferable, and 0.05% by weight or more is more preferable. Further, from the viewpoint of suppressing irritation to the skin, the content is preferably 1% by weight or less, more preferably 0.5% by weight or less. From these viewpoints, the content of the component (D) is preferably 0.01 to 1% by weight, more preferably 0.05 to 0.5% by weight in the composition.

  In addition, a commercial item can also be used for (D) component. Specifically, examples of N-coconut oil fatty acid acyl-L-arginine ethyl pyrrolidone carboxylate include CAE (trade name, manufactured by Ajinomoto Co., Inc.). Examples of N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride include Amisafe LMA-60 (trade name, manufactured by Ajinomoto Co., Inc.). .

  In addition, the cleansing cosmetic of the present invention substantially does not contain parabens such as ethanol and paraoxybenzoic acid, methyl paraoxybenzoate, and ethyl paraoxybenzoate. As a result, it is possible to reduce irritation to the skin without rinsing with lukewarm water and post-face washing after the treatment. Note that “substantially” means that it is not contained at all or contained in a raw material such as a plant extract.

  In the cleansing cosmetic of the present invention, as long as it does not impair the effects of the present invention, in addition to the above-described components, components commonly used in cosmetics, for example, ultraviolet absorbers, powders, antioxidants, perfumes Additives such as coloring agents, 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 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 dry skin and skin tightness due to excessive degreasing, it is preferable not to wash off with warm water after the treatment or face wash, and impregnate cleansing cosmetics into cotton or nonwoven fabric A method of treating the applied site and a method of wiping with a cotton or non-woven fabric after applying the cleansing cosmetic to the applied site is preferable.

  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.

(Sample preparation 1)
According to the composition described in Table 1 and Table 2, the cleansing cosmetics of Examples 1 to 6 and Comparative Examples 1 to 7 were respectively prepared according to conventional methods 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 cleansing)
Cleansing cosmetics obtained in each Example and each Comparative Example were impregnated into cotton by 20 female evaluation panels with makeup, and actually used on the face, and the removal effect was sensory evaluated according to the following evaluation criteria did.

<Evaluation criteria for makeup stain removal effect>
◎: 16 or more out of 20 responded that makeup stain removal effect was excellent ○: 11-15 out of 20 responded that makeup stain removal effect was excellent △: 6-10 out of 20 makeup stains Answer: Excellent removal effect x: 5 out of 20 respondents said that makeup stain removal effect is excellent

(Test Example 2: Evaluation of usability)
The 20 panelists evaluated the stickiness and irritation immediately after cleansing in Test Example 1 and the moist feeling of the skin after 1 hour according to the following evaluation criteria. In addition, the said irritation | stimulation feeling means the temporary tingling sensation and hot flashing felt immediately after cleansing until 10 minutes later.

<Evaluation criteria for stickiness>
◎: Reply if 16 or more of 20 people are not sticky ○: Reply if 11-15 of 20 people are not sticky △: Reply if 6-10 of 20 people are not sticky ×: Less than 5 of 20 people Answer that it is not sticky

<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 △: 6 to 10 out of 20 responses Answer: If there is a moist feeling and the effect will last ×: 5 out of 20 respondents will feel moist and the effect will last

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

(Test Example 3: Evaluation of rough skin prevention effect)
The cleansing cosmetics obtained in each Example and each Comparative Example were used once a day by the 20 evaluation panels, 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>
◎: 16 or more of 20 respondents do not feel rough ○: 11-15 of 20 respondents do not feel rough △: 6-10 of 20 respondents do not feel rough ×: 20 Less than 5 of the names responded that they did not feel rough

(Test Example 4: Evaluation of antiseptic stability)
Using the cleansing cosmetics obtained in each Example and each Comparative Example, antiseptic stability was evaluated by the following operation. As a test bacterium, a mixed bacterial solution of Escherichia coli NBRC3972 (E. coli), Staphylococcus aureus NBRC13276 (Staphylococcus aureus), Bacillus subtilis NBRC12210 (Bacillus subtilis) was used as a general bacterium. Moreover, Saccharomyces cerevisiae NBRC0234 was used as yeast, and Aspergillus niger NBRC 9455 was used as mold. The culture solution in which these bacteria were pre-cultured in advance was mixed with about 10 ⁸ cells / mL of common bacteria. cerevisiae is about 10 ⁷ cells / mL. Niger diluted to about 10 ⁶ cells / mL was used as a bacterial suspension. The number of bacteria was confirmed by the colony count method.
20 g of each sample of Examples and Comparative Examples was put in a glass container that had been sterilized by dry heat, 0.2 mL of the above-mentioned bacterial suspension was inoculated, and the mixed bacteria were S.P. cerevisiae and A.I. Niger was cultured at 25 ° C. Mixed bacteria, S. C. cerevisiae, 1-7 days after inoculation, About 7, 14 and 21 days after niger, 1 g of each sample was taken out, diluted with physiological saline, mixed in an agar medium and cultured for 48 hours, and the number of remaining bacteria in the sample was calculated. In addition, A. Regarding niger, the measurement after confirming complete death was omitted.

<Evaluation criteria for antiseptic stability>
A: Bacteria and yeast showed a death rate of 99.9% or more by the seventh day after inoculation, and molds showed a death rate of 99.9% or more by the 21st day.
○: Bacteria and yeast showed a death rate of 99.9% or more by the seventh day after inoculation, and molds showed a death rate of 99.0% or more by the 21st day.
(Triangle | delta): Bacteria and yeast showed 99.0% or more death rate by the 7th day after inoculation, and mold showed 99.0% or more death rate by the 21st day.
X: Not applicable to the above, and a sufficient antiseptic effect is not recognized.

  From the results in Tables 1 and 2, it can be seen that the cleansing cosmetics of each example have no skin irritation and excellent makeup stain removal effect as compared with the comparative examples. It can also be seen that there is no stickiness, a moist feeling is maintained, and there is no rough skin after continuous use. Further, it can be seen that the water has excellent antiseptic stability despite the high content of water.

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

(Prescription Example 1)
Purified water 88.5
Polyoxyethylene (capryl / capric acid) glyceryl 6.0
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
Total 100.0

(Prescription example 2)
Purified water 85.5
Polyoxyethylene (capryl / capric acid) glyceryl 7.0
N- [3-alkyl (12,14) oxy-2-hydroxypropyl]
-L-arginine hydrochloride 0.25
1,3-butylene glycol 7.0
1,2-octanediol 0.05
Sodium dihydrogen phosphate 0.09
Disodium hydrogen phosphate 0.01
Tocopherol acetate 0.1
Total 100.0

(Prescription Example 3)
Purified water 88.55
Polyoxyethylene (capryl / capric acid) glyceryl 6.0
N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate 0.15
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
Total 100.0

(Prescription Example 4)
Purified water 85.6
Polyoxyethylene (capryl / capric acid) glyceryl 7.0
N-coconut oil fatty acid acyl-L-arginine ethyl DL-pyrrolidone carboxylate 0.15
1,3-butylene glycol 7.0
1,2-octanediol 0.05
Sodium dihydrogen phosphate 0.09
Disodium hydrogen phosphate 0.01
Tocopherol acetate 0.1
Total 100.0

Claims (3)

  (A) 70-90% by weight of water, (B) polyoxyethylene fatty acid glyceryl, (C) polyhydric alcohol, (D) N-coconut oil fatty acid acyl-L-arginine ethyl pyrrolidone carboxylate and / or N- A cleansing makeup comprising a composition comprising [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride, which is substantially free of ethanol and parabens. Fee.   The cleansing cosmetic according to claim 1, wherein the component (B) is polyoxyethylene (capryl / capric acid) glyceryl. The cleansing cosmetic according to claim 1 or 2, wherein the cleansing cosmetic is not washed away.