JPH0723295B2 - Warm skin cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a skin cosmetic that can give a warm sensation (warm feeling) to the skin when applied to the skin (skin). More specifically, the present invention relates to a warm skin cosmetic which has no adverse side effects on the human body or skin irritation, can quickly give a warm feeling to the skin during use, and can maintain an appropriate warm feeling for a long time.

(Prior Art) Conventionally, for the purpose of warming the skin during use, polyhydric alcohol, pepper powder, pepper tincture, pepper extract, capsaicin, nonyl acid watylylamide, ginger solution, menthol, camphor, methyl salicylate, etc. have been applied to the skin. Although it was blended in cosmetics, these had drawbacks such as peculiar irritating odor and skin irritation and insufficient warm feeling.

On the other hand, JP-A-57-75909 discloses a warm-feeling cosmetic containing a large amount of a substance such as a polyhydric alcohol that heats up in contact with water and raises the temperature. There are drawbacks such as insufficient effect and weak warmth.

(Problems to be Solved by the Invention) The present inventor has conducted diligent research as an improvement of the drawbacks in the prior art, and as a result, a compound represented by the following general formula (specific vanillyl alkyl ether), a water-soluble surfactant and water. Skin cosmetics containing (1) are safe for the human body and do not cause skin irritation.

(2) It has no unpleasant pungent odor.

(3) The present invention has been completed by discovering that when used, the skin can be quickly warmed without causing fever and rise in skin temperature, and that a suitable warmth can be maintained for a long time.

It is an object of the present invention to provide a warm skin sensation cosmetic composition which is free of undesirable side effects and skin irritation on the human body and is excellent in warm feeling and durability.

(Means for Solving Problems) The above-mentioned object is to provide a temperature skin cosmetic characterized by containing at least one of vanillyl alkyl ether, a water-soluble surfactant, and water as main components. Achieved by fees.

As the vanillyl alkyl ether used in the present invention,
Examples thereof include vanillyl-n-propyl ether, vanillyl isopropyl ether, vanillyl-n-butyl ether, vanillyl-n-amyl ether, vanillyl isoamyl ether, and vanillyl-n-hexyl ether.

These vanillyl alkyl ethers are disclosed in JP-A-52-9729
Known compounds as disclosed in Japanese Patent Publication No.
As described below, it is safe for the human body and has no skin irritation or sensitization.

(1) Skin irritation As a result of conducting a test according to the method of Draize described below, the animal skin irritation score and the human (human) skin irritation score are both 0, and the above vanillyl alkyl ether is
It was observed that there was no skin irritation.

(Draize, JH, Association of Food and Drug of ficia
ls of the United States Appraisal of the Safety of
Chemicals in Foods Drug and Cosmetics, 46 (1959),
(Texas State Department of Health, Austin) (2) Sensitization As a result of the following Maximization Test (allergenicity test method) of Magnusson et al., No sensitization was found in the above vanillyl alkyl ether. .

(Magnisson, B, Kligman, A, M,: Allergic, Contact Dermat
itis in the Guinea Pig (1970), Charles, C, Thomas, Pu
blisher Springfied, Illinois, USA] The blending amount (usage amount) of the vanillyl alkyl ether in the cosmetic of the present invention is 0.05 to 0.5% by weight based on the total weight of the prescription components (weight of the composition). 0.05% by weight
If it is less than 0.5% by weight, the warming effect is insufficient, and if it exceeds 0.5% by weight, the warming feeling (hot feeling) is too strong, which is not preferable. Examples of the water-soluble surfactant used in the present invention include anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants, among which the following formula is used for calculation. Hydrophilic-lipophilic (HLB) value of 10 to 20
The nonionic surfactant is most preferable in terms of the time required to detect a warm feeling, the strength of the warm feeling, the duration of the warm feeling, and the like.

Mw: Molecular weight of hydrophilic group portion of surfactant Mo: Molecular weight of lipophilic group portion of surfactant As the nonionic surfactant having the above HLB value of 10 to 20,
For example, polyoxyethylene sorbitan monolaurate (20E ・ O) (HLB = 16.9), polyoxyethylene sorbitan monopalmitate (20E ・ O) (HLB = 15.6), polyoxyethylene sorbitan monostearate (20E ・
O) (HLB = 14.9), polyoxyethylene sorbitan tristearate (20E ・ O) (HLB = 10.5), polyoxyethylene sorbitan monooleate (6E ・ O) (HLB = 1
0.0), polyoxyethylene sorbitan trioleate (20E ・ O) (HLB = 11.0), polyoxyethylene sorbitan monooleate (HLB = 15.0) and other sorbitan nonionic surfactants, polyoxyethylene glyceryl monooleate ( 15E ・ O) (HLB = 14.5), polyoxyethylene glyceryl monooleate (15E ・ O) (HLB = 13.3)
5) Glycerin-based nonionic surfactants such as polyoxyethylene monolaurate (10E ・ O) (HLB = 12.5), polyoxyethylene monostearate (10E ・ O) (HLB =
11.0), polyoxyethylene monostearate (40E ・
O) (HLB17.5) and other fatty acid ester-based nonionic surfactants, polyoxyethylene lauryl ether (9E ・ O)
(HLB = 14.5) Polyoxyethylene lauryl ether (2
Alkyl ether nonionic interface such as 5E ・ O) (HLB = 19.5), polyoxyethylene cetyl ether (5.5E ・ O) (HLB = 10.5), polyoxyethylene stearyl ether (20E ・ O) (HLB = 18.0) Activators can be mentioned,
It is not limited to these.

The water-soluble surfactants are used alone or in combination of two or more, and the amount thereof is 1 to 10 times the weight of the vanillyl alkyl ether used in combination, and the total amount by weight of the formulation components of the cosmetic ( 0.05-5 based on the weight of the composition)
% By weight. If the amount is less than 0.05% by weight, the time required to detect the warm feeling is too long, and the strength and duration of the warm feeling are insufficient, which is not preferable. Further, if it exceeds 5% by weight, the warm feeling is too strong, which is not preferable.

The amount of water to be added is usually 5 to 95% by weight based on the total weight of the ingredients (weight of the composition).

In addition to the essential constituents of the previous term, a fragrance, a coloring agent, an oily substance, an antiseptic, a skin nutritional agent and the like can be added if necessary.

The warm skin cosmetics of the present invention include, for example, skin lotion, moisture lotion, softening lotion,
It is useful as a skin cosmetic such as skin cream, massage cream, crazing cream, pack, hand cream, creamy makeup base, milky makeup base, and creamy soap.

(Effect of the Invention) The warm skin cosmetic of the present invention has no adverse side effects or skin irritation on the human body, gives a warm feeling to the skin promptly without causing fever or temperature rise during use, and has an appropriate level. It can maintain warmth for a long time and has an extremely high commercial value.

(Examples) Examples will be described below.

In the examples,% means% by weight, and parts means parts by weight.

The sensory test was conducted by 20 professional inspectors.

1. Irritating odor The number of people who responded that they sensed an irritating odor when applied.

2. Stimulation The number of people who answered that they felt irritation within 1 hour after application was shown.

3.Temperature start time Measure the time from application to sensing the warmth,
The average value of 20 people was shown.

4. Temperature duration We surveyed how many minutes the warm feeling lasted and showed the average value of 20 people.

5. Intensity of warmth sensitivities We asked the number of respondents by conducting a questionnaire about which rank of the warmth sensitivities the samples have when they felt the strongest sensations of warmth.

I don't feel warmth, I feel weakness, I feel warmness just right, I feel strong warmth, I cannot bear it because it is too strong.

Examples 1-5, Comparative Examples 1-9 (skin lotion) Treatment Polyoxyethylene sorbitan monolaurate (20E
-O) 0.5 part Each of the skin lotions was prepared by uniformly agitating the warm sensation substance 0.2 water 99.3 components shown in Table-1. The characteristics are shown in Table-1.

As is clear from Table 1, the polyhydric alcohol (glycerin), which is a warming substance, does not feel any warmth, capsaicin or pepper tincture is irritating, menthol has an irritating odor and no temperature, and methyl salicylate is irritating. there were. In addition, while the related compounds of vanillyl methyl ether, vanillyl ethyl ether, and vanillyl heptyl ether do not give warm feeling or the warm feeling is insufficient, the warming effect of the specific vanillyl alkyl ether of the present invention. Is very good.

Examples 5 to 12 and Comparative Examples 10 to 12 (wash-out type pack agent) Treatment Carboxyvinyl polymer 0.5 part Methyl paraben 0.1 Surfactant shown in Table 2 1.5 Washylyl-n-butyl ether 0.3 Water 97.5 Rinse type pack consisting of caustic potash 0.1 The agent was prepared by a conventional method.

The results are shown in Table-2. As is clear from Table 2, even if vanillyl alkyl ether is blended, almost no warm feeling is felt when no surfactant is blended or when the surfactant is an oil-soluble surfactant.

When the surfactant is a non-ionic surfactant with an HLB value of 10 to 20, the warming sensation start time is short and the warming sensation continues for a long time.
The intensity of warmth was moderate.

Example 13 (massage cream) The water phase uniformly dissolved at 80 ° C. was added to the oil phase uniformly dissolved at 80 ° C., and an O / W type massage cream of the present invention was obtained while stirring. The characteristics are shown in Table-8. As is clear from Table 3, the massage cream of the present invention had a short warming onset time, sustained temperature for a long time, and a moderate warming strength.

Claims (1)

[Claims] 1. A temperature skin cosmetic in which at least one of vanillyl alkyl ether, a water-soluble surfactant, and water are blended as main constituents, which has a hydrophilic-lipophilic ratio (HLB). The content of the nonionic surfactant having a value of 10 to 20 is 1 to 10 times the weight of the vanillyl alkyl ether, and 0.05 to 5% by weight based on the total weight of the cosmetic amount. Do temperature skin cosmetics. However, the carbon number of the alkyl group of the vanillyl alkyl ether is 3 to 6.