JPH0696512B2 - Non-aqueous 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 non-aqueous warm skin sensation cosmetic that does not cause undesired side effects or skin irritation to the human body, 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, polyhydric alcohol, chili powder, pepper tincture, chili pepper extract, capsaicin, nonyl acid vanillyl amide, ginger solution, menthol, camphor, methyl salicylate, etc. have been applied to the skin for the purpose of warming the skin during use. 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) As a result of intensive studies conducted by the present inventor to improve the difficulties in the prior art, a compound represented by the following general formula (a specific vanillyl alkyl ether), a saturated side chain alcohol and lactic acid are shown. A non-aqueous skin cosmetic containing a lactate ester (hereinafter abbreviated as lactate ester) consisting of (1) is safe for the human body and has no skin irritation.

(2) It has no unpleasant pungent odor.

(3) The present invention has been completed by discovering that, during use, the skin can be quickly warmed without causing fever and rise in skin temperature, and an appropriate 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 warm skin care cosmetic characterized in that at least one of the compounds represented by the following general formula and a lactate ester are blended as main components. Achieved by

General formula (In the above formula, R is an alkyl group having 3 to 6 carbon atoms.) Examples of the compound represented by the above general formula (hereinafter referred to as vanillyl alkyl ether for convenience) used in the present invention include, for example, vanillyl-n- Examples thereof include 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, both the animal skin irritation score and the human (human) skin irritation score were 0, and the above vanillyl alkyl ether had skin irritation. It was recognized that there was no.

(Draize, JH, Association of Food and Drug of ficia
ls of the United States Appraisal of the Safety of
Chemicals in Foods Drng and Cosmetics, 46 (1959),
(Texas State Department of Health, Au-stin) (2) Sensitization property As a result of following the Maximization Test (allergenicity test method) of Magnusson et al. Described below, sensitization property was found in the above vanillyl alkyl ether. There wasn't.

(Magnisson, B, Kligman, A, M,: Allergic, Contact Dermat
itis in the Guinea Pig (1970), Charles, C, Thomas, Pu
blisher Springfield, Illinois, USA] Amount (use amount) of vanillyl alkyl ether in the cosmetic of the present invention
Is based on the total weight of the ingredients (weight of the composition)
It is 0.05 to 0.5% by weight. If it is less than 0.05% by weight, the warming effect is insufficient, and if it exceeds 0.5% by weight, the feeling of warmth (hot feeling).
Is too strong, which is not preferable.

The lactic acid ester used in the present invention is a lactic acid ester composed of a saturated side chain alcohol and lactic acid, such as isopropyl lactate, isobutyl lactate, 2-ethylhexyl lactate, octyldodecyl lactate,
Isononyl lactate, 2-hexyldecyl lactate, isostearyl lactate, isotridecyl lactate, 2-heptyl one decyl lactate, 5,7,7-trimethyl-2- (1,3,3-trimethylbutyl) -octyl lactate, etc. Is mentioned.

These lactic acid esters are used singly or in combination of two or more, and the compounding amount thereof is 10 times or more the weight of the vanillyl alkyl ether used in combination, and the total weight of the prescription components of the cosmetic composition (of the composition 0.5 to 90 based on (weight).
It is 0% by weight, preferably 5 to 60% by weight. If the amount is less than 0.5% 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.

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

The non-aqueous warm skin cosmetics of the present invention include, for example, sun oil, moisture oil, nourishing oil, baby oil, and other oils, and non-aqueous foundations, lipsticks, lip balms, blushers, and make-ups such as white powder. It is useful as a class.

(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. Warm start time Measure the time required to detect the warmth after application,
The average value of 20 people was shown.

4. Warmth sensation duration We surveyed how long the sensation of warmth lasted, and showed the average value of 20 persons.

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 can't put up with too much warmth.

Examples 1 to 5 and Comparative Examples 1 to 9 (Moisture Oil) Formulation Isopropyl lactate 10% Warming substance shown in Table 1 0.2 squalane 89.8 The components of ~ were uniformly stirred to prepare each moisture oil. The characteristics are shown in Table-1.

As is clear from Table 1, the polyhydric alcohol (glycerin), which is a warming sensation substance, does not feel any warmth, capsaicin or pepper tincture is irritating, menthol has a pungent odor and no warming sensation, and methyl salicylate is irritating. was there. Further, the related compounds of vanillyl methyl ether, vanillyl ethyl ether, and vanillyl heptyl ether do not give a warm sensation or the warm sensation is insufficient. The warming effect of the vanillyl alkyl ether is extremely good.

Examples 5 to 12 and Comparative Examples 10 to 12 (oil-based foundation) Formulation Bengala 1.4% Yellow iron oxide 4 Black iron oxide 0.4 Titanium oxide 20 Mica 10 Talc 3 Liquid paraffin 31.9 Compound 15 shown in Table 2 Ozokerite 7 Microcrystalline wax 7 After 0.3% of vanillyl-n-butyl ether was uniformly mixed, the pigment mixture was uniformly dissolved and mixed in, and the mixture was sufficiently kneaded, melted again, and poured into a gold plate to prepare an oily foundation.

The results are shown in Table-2. As is clear from Table 2, even if the vanillyl alkyl ether is blended, almost no warm feeling is felt when the lactate ester is not blended.

Example 13 (lipstick) Microcrystalline wax 3.0% Ceresin 5.0 Candelilla wax 3.0 Carnauba wax 1.0 Cholesterine stearate 10.0 Squalane 5.0 2-Peptylundecyl lactate 20.0 Triglyceryl caprate 25.0 Lanolin 4.9 Vanillyl-n-amyl ether 0.1 Castor oil 14.9 Red 202 No. 1.5 Red No. 1 Aluminum Lake 0.1 Bengala 0.5 Titanium Oxide 0.5 After heating and melting the fragrances to uniformly mix them, a coloring material is added thereto, and the mixture is kneaded with a roll mill to be uniformly dispersed.

Then, this was re-dissolved, a fragrance was added thereto, defoamed, poured into a mold, rapidly cooled and solidified, taken out of the mold and filled in a container to obtain a lipstick of the present invention.

The characteristics are shown in Table 3. As is clear from Table 3, the lipstick of the present invention had a short warming onset time, sustained warming for a long time, and the strength of warming was moderate and good.

Claims (1)

[Claims] 1. A non-aqueous warm sensation comprising, as main constituents, at least one compound represented by the following general formula, and a lactic acid ester composed of a saturated side chain alcohol and lactic acid. Skin cosmetics. General formula (In the above formula, R is an alkyl group having 3 to 6 carbon atoms.)