JPH08157333A - Hair cosmetic - Google Patents

Abstract

PURPOSE: To obtain a hair cosmetic having excellent dandruff preventing effect by including vitamin A and an antibacterial agent. CONSTITUTION: This hair cosmetic contains vitamin A (e.g. retinol) in an amount of 0.001-0.5wt.% and an antibacterial agent (e.g. piroctone olamine) in an amount of 0.0001-5wt.%. Further, the objective cosmetic is suitably mixed with an additive usually used in a hair cosmetic and may be formed to hair tonic, hair liquid, latex for scalp, hair cream, hair shampoo, hair rinse or hair spray, etc. The objective cosmetic is useful for cure of keratonosis because vitamin A has an important activity to normal differentiation and preservation of skin, and also has a dandruff preventing effect because of high cuticle tissue-flexible action. Use of vitamin A in combination with an antibacterial agent exhibits further excellent dandruff preventing effect than a sole use of the antibacterial agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic composition for preventing dandruff, which contains vitamin A and an antibacterial agent. The present invention is particularly used in the field of quasi drugs or cosmetics.

BACKGROUND OF THE INVENTION As a cause of dandruff, lipase derived from microorganisms resident in the scalp stimulates increase in fatty acids in sebum, excessive degreasing by surfactants and dryness of scalp due to elution of moisturizing components in epidermis, residual Irritation by the surfactant itself and scalp irritation by hair are considered. Conventionally, since dandruff increases with time after washing hair, it is said that the influence of microorganisms resident on the scalp is great, and antibacterial agents such as piroctone olamine, pyrithione zinc (zinc pyrithione), triclosan, and trichlorocarbanilide are used. Blended hair cosmetics have been used to prevent dandruff. However, the antidandruff effect of these antibacterial agents has not been satisfactory yet.

[0002]

[Problems to be Solved by the Invention] Vitamin A has an important effect on normal differentiation and maintenance of skin,
It is widely used in the treatment of dyskeratosis. Further, as a result of the examination, it was confirmed that the keratinocyte softening effect, which is correlated with the moisturizing effect, is also high, and it was considered to be effective against dandruff. Therefore, when combined with an antibacterial agent that is said to have an antidandruff effect, it is far superior to the case of using "vitamin A" or "antibacterial agent" alone, and is superior to conventional antidandruff hair cosmetics. It turned out to have a preventive effect. Furthermore, they have found that the combination of vitamin A and catechins and theaflavins having antibacterial effect is very effective in preventing dandruff, and completed the present invention.

[0003]

That is, the present invention provides one or two selected from the group consisting of vitamins A and an antibacterial agent.
It is a hair cosmetic composition containing at least one kind. Hereinafter, the configuration of the present invention will be described in detail. The vitamins A used in the present invention are esters such as retinol, retinal, retinoic acid, vitamin A oil, and retinol acetate.
In addition, the antibacterial agent used in the present invention includes piroctone olamine, zinc pyrithione (zinc pyrithione), triclosan, trichlorocarbanilide, selenium disulfide, hinokitiol, chlorohexidine gluconate, benzalcorium chloride, salicylic acid, gallocatechin, epicatechin, epicatechin. Extracts extracted from catechins such as gallocatechin, epicatechin gallate and epigallocatechin gallate, theaflavin digallate, theaflavin monogallate A, theaflavin monogallate B, flavins such as free theaflavin, green tea, oolong tea and black tea is there.
Extracts such as green tea, oolong tea, and black tea are 100
Add 2000g of boiling water to the hot water, add 20g of hot water at 90 degrees and filter,
The obtained filtrate is freeze-dried to obtain a tea extract.

In the hair cosmetic composition of the present invention, the amount of vitamin A is 0.001 to 0.5% by weight, preferably 0.01 to 0.2% by weight, and the antibacterial agent is 0.0001 to 5% by weight.
Is. In the case of blending the vitamin A and the antibacterial agent, high blending is limited in terms of safety.

In addition to the above-mentioned essential components, the hair cosmetic composition of the present invention contains the usual components commonly used in hair cosmetic compositions, such as liquid oils, solid oils, oils such as waxes and silicone oils, and liquid paraffin. Hydrocarbons such as squalane, higher fatty acids, higher alcohols, esters such as isopropyl myristate, humectants such as glycerin, 1,3-butylene glycol, thickeners such as bentonite and guar gum, cationized cellulose, silicone resins, etc. UV absorbers such as film forming polymers, benzophenone derivatives, para-aminobenzoic acid derivatives, para-methoxycinnamic acid derivatives, salicylic acid derivatives, sequestering agents, citric acid, ascorbic acid, tocopherols, butylhydroxytoluene, butylhydroxyanisole, etc. Antioxidants, preservatives such as parabens, Emissions, cations, amphoteric, nonionic surfactants such as water, alcohols, flavoring, be appropriately blended as required color agents. The hair cosmetics of the present invention broadly refer to those used for the scalp or hair, for example, hair tonic, hair liquid (liquid hair styling agent), scalp emulsion, hair cream, hair shampoo, hair rinse,
Hair spray etc. are included.

[0006]

EXAMPLES Next, the present invention will be described in more detail with reference to examples. The present invention is not limited to this. The blending amount is% by weight.

[Method for measuring antidandruff effect] As vitamins A, retinol 0.075% and antibacterial agent piroctone olamine, pyrithione zinc, trichlorocarbanilide,
Hinokitiol, chlorhexidine gluconate, epicatechin, theaflavin digallate, and oolong tea extract were added to hair tonics at 0.05%, respectively, and the antidandruff effect was compared with the hair tonics alone. 2 as a target person
80 men with 2 to 50 years old who have a relatively high number of dandruff are selected.
Divide into 0 groups of 0 people regardless of age. The test period is 8 weeks, the tonic without retinol and antibacterial agent for the first 2 weeks, the tonic with retinol alone for the next 2 weeks, the tonic with each of the above 8 antibacterial agents for the next 2 weeks, and the last 2 tonics. Weekly retinol and above 8
A tonic containing a combination of two antibacterial agents was used. During the test period, shampoos and rinses without chemicals were used to wash the hair every day, and an appropriate amount of the designated sample tonic was applied to the head once each morning and evening. The first week of each 2 weeks × 4 period was the acclimatization period of the test shampoo, and the second week was the dandruff collection period. During the week of the dandruff sampling period, dandruff sampling is performed with a suction device every day before washing hair, and the dandruff weight is measured.
Retinol and tonic without antibacterial agent The tonic with sole retinol, tonic with sole antibacterial agent, and tonic with retinol and antibacterial agent are calculated for the duration of use of retinol and tonic without antibacterial agent. If the average reduction rate of dandruff in each group is 50% or more ... A If it is 40% or more and less than 50% B When it was 20% or more and less than 40% ... C When it was less than 20% ... It was ranked as D.

As an example of a method of producing a sample tonic, a method of producing a tonic containing retinol 0.075% and piroctone olamine 0.05% is shown below. Retinol 0.075g, piroctone olamine 0.05g, BHT0.05 to 95.% ethanol 74.325g
g, 0.5 g of polyoxyethylene hydrogenated castor oil (60 E.O.) are added and dissolved by stirring. To this, 25 g of purified water was added, mixed with stirring, and filtered to obtain a hair tonic. Similarly, a retinol- and antibacterial-agent-containing tonic is prepared using the above-mentioned other antibacterial agents. A tonic containing only retinol and a tonic containing only an antibacterial agent are those in which the antibacterial agent or the retinol extract is replaced with purified water or ethanol, and a tonic without retinol and the antibacterial agent is the retinol and the antibacterial extract are replaced with ethanol. is there. Table 1 shows the results.

[0009]

[Table 1]

From the above results, it was confirmed that the combination of retinol and the antibacterial agent exhibits a far superior antidandruff effect than the case of using "retinol" or "antibacterial agent" alone. Examples of the present invention will be shown below.

Example 1 A hair tonic having the following composition was prepared. (Phase A) Retinol 0.075 (wt%) Piroctone olamine 0.05 Dibutylhydroxytoluene 0.05 Polyoxyethylene hydrogenated castor oil (60E.O.) 0.5 Perfume 0.1 Ethyl alcohol 74.225 (Phase B) Lactic acid 0.05 Sodium lactate liquid (50%) 0.04 Purified water 24.91 (Production method) Phases A and B were dissolved and mixed to obtain a hair tonic. When this hair tonic was tested on humans in the same manner as the previous experimental example, it was confirmed that its antidandruff effect was excellent.

Example 2 A hair tonic having the following composition was prepared. (Phase A) Retinal 0.1 (wt%) Hinokitiol 0.5 Polyoxyethylene hydrogenated castor oil (60E.O.) 0.5 Fragrance 0.1 Ethyl alcohol 73.8 (Phase B) epicatechin 0.005 Purified water 24.995 (Production method) Phases A and B Each was dissolved and mixed to obtain a hair tonic. When this hair tonic was tested on humans in the same manner as the previous experimental example, it was confirmed that its antidandruff effect was excellent.

Example 3 A hair liquid (liquid hair styling composition) having the following composition was prepared. (Phase A) Retinol 0.1 (% by weight) Dibutylhydroxytoluene 0.05 Polyoxypropylene butyl ether (40E.O.) 15 Perfume 0.1 Ethyl alcohol 50 (Phase B) Oolong tea extract * 0.0006 Purified water 34.7494 (Production method) Phase A, B The respective phases were dissolved and mixed to obtain a hair liquid (liquid hair styling product). This hair liquid is
It showed an excellent antidandruff effect. * Oolong tea extract is 100g of oolong tea leaves in 2000
Add to ml and extract at 90 ° C for 20 minutes in hot water, filter and freeze-dry the resulting filtrate to obtain a tea extract.

Example 4 A hair cream having the following composition was prepared. (Phase A) Vitamin A oil 0.01 (% by weight) Dibutylhydroxytoluene 0.05 Liquid paraffin 15 Vaseline 15 White beeswax 2 Ethylparaben 0.1 Butylparaben 0.1 Perfume 0.1 (Phase B) epigallocatechin 0.001 Carboxyvinyl polymer 0.1 Xanthan gum 0.1 Glycerin 5 Polyoxy Ethylene hydrogenated castor oil 3 Purified water 59.439 (Production method) Phases A and B were dissolved by heating at 80 ° C, mixed, homomixed, emulsified and cooled to obtain an O / W emulsion type hair cream. This hair liquid showed an excellent antidandruff effect.

Example 5 A hair lotion having the following composition was prepared. (Phase A) Retinol 0.1 (% by weight) Dibutylhydroxytoluene 0.05 Liquid paraffin 1 Polyoxyethylene hydrogenated castor oil (40E.O.) 1 Acrylic resin Alkanolamine solution 0.5 Perfume 0.5 Ethyl alcohol 40 (Phase B) Chlorohexidine gluconate 0.01 Theaflavin Digallate 0.01 Dipropylene glycol 3 Purified water 53.83 (Production method) Phases A and B were dissolved and mixed to obtain a hair lotion. This hair lotion showed an excellent antidandruff effect.

Example 6 A hair shampoo having the following composition was prepared. Lauryl polyoxyethylene (3) Sulfate sodium salt (30% aqueous solution) 30 (wt%) Lauryl sulfate sodium salt (30% aqueous solution) 10 Palm oil fatty acid diethanolamide 4 Retinol acetate 0.5 Hinokitiol 0.1 Pyrithione zinc 0.08 Epicatechin 0.005 Glycerin 1 Fragrance 0.5 Purified water 53.815 (Production method) The above ingredients were added in order, heated and cooled to obtain a hair shampoo. This hair shampoo showed an excellent antidandruff effect.

Example 7 A hair rinse having the following composition was prepared. Retinol acetate 0.5 (wt%) Silicone oil 3 Liquid paraffin 1 Cetyl alcohol 1.5 Stearyl alcohol 1 Stearyl trimethyl ammonium chloride 0.7 Glycerin 3 Trichlorocarbanilide 0.2 Perfume 0.3 Purified water 88.8 (Production method) Got a hair rinse. This hair rinse showed an excellent antidandruff effect.

The hair cosmetic composition of the present invention is a hair cosmetic composition having an excellent antidandruff effect.

Claims (1)

[Claims] 1. A hair cosmetic comprising a combination of vitamins A and an antibacterial agent.