JPS61276506A - Method for removing hair - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a hair removal method for painlessly removing body hair.

[Prior art]

Conventionally, depilatory agents have been put into practical use in the form of wax and in the form of creams containing depilatory drugs.

For hair removal creams, after applying the cream to the hair removal area,
Hair removal is performed by leaving it for a predetermined period of time and then wiping it off.

However, in this method, after applying the hair removal cream, it is necessary to prevent the cream from adhering to clothes etc. for a period of time until the effect of the hair removal drug is exerted. I had to hold my hands up until I could wipe it off.

Furthermore, when wiping, there are problems in that an unpleasant odor is generated due to the decomposition of body hair by the drug, and skin irritation occurs due to strong rubbing.

Furthermore, when wax is used, there is a problem in that it is physical hair removal and is accompanied by severe pain.

[Problem that the invention seeks to solve]

Therefore, it is an object of the present invention to provide a hair removal method that takes a short time and does not cause unpleasant odor or severe pain.

[Means for solving problems]

The present invention provides a hair removal method comprising applying a hair removal agent containing an aqueous solution or emulsion of a polymeric compound capable of forming a film and a hair removal drug to a hair removal site, heat-treating the area to form a film in a short time, and peeling the film. Regarding.

In the method according to the present invention, a polymer compound is formed into a film by heat treatment in a short time, body hair is trapped in the film, and by peeling off this film, the hair root part is weakened by the hair removal drug. Body hair is characterized by being removed beautifully.

There are no particular restrictions on the hair removal drug, and conventionally known drugs may be used.Specifically, thioglycolic acid and its salts, strontium sulfate, sodium sulfide, barium sulfide, calcium sulfide, etc. One type or a mixture of two or more of these can be used. The depilatory drug is incorporated in the depilatory agent in an amount of 1 to 15% by weight, preferably 3 to 12% by weight.

Hair removal agents are usually applied at 50 to 1000 g/rd on the hair removal area.
It is blended in sufficient amount to be applied.

The polymer compound having film-forming ability may be either water-soluble or water-insoluble, and in the case of a water-soluble polymer, it is used in the form of an aqueous solution, and in the case of a water-insoluble polymer, it is provided in the form of an emulsion. Examples of water-soluble polymer compounds include polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid and its salts, polyacrylamide, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyethylene glycol, gum arabic, etc. Examples of the emulsion include natural rubber latex, synthetic rubber latex such as SBR, acrylic, urethane, polyvinyl acetate, polyacrylic ester, and ethylene-vinyl acetate copolymer emulsion. These may be used alone or as a mixture of a plurality of them. In particular, the use of polyacrylamide in this field is new, has excellent film strength, provides a good local finish, and allows hair removal treatment without residue. It is desirable that the amount of the aqueous solution or emulsion of the polymer compound added is such that when a film is formed by heat treatment, the strength is such that it can be easily peeled off from the skin of the depilated area. Although it can be increased or decreased as appropriate depending on the selected polymer compound, it is usually 1 to 70% by weight.
, preferably 2 to 50% by weight.

Note that by adding a basic substance to the depilatory agent, the effect of the depilatory drug is enhanced, so it is more effective. Examples of basic substances include ammonium salts of organic dicarboxylic acids or their metal salts, potassium hydroxide, calcilyl hydroxide, sodium hydroxide, etc., as well as agents to improve wettability, fragrances, and hair swelling promoters. Agents and the like may be added as desired.

In the present invention, heat treatment is performed after applying a depilatory agent to the site to be depilated. Preferably, the heat treatment may be carried out for a time and at a temperature sufficient to bring the water content in the depilatory agent to about 1 to 25% by weight. If the water content is less than 1% by weight, the pain during peeling will be severe, and if it exceeds 25% by weight, a sufficient hair removal effect cannot be achieved.The heating temperature is usually 80~80°C.
The temperature is 300℃, preferably 100 to 200℃, and the heating time may vary depending on the heating temperature, but as a guide, it is approximately 300℃.
~10 minutes. The heat treatment is performed using, for example, a household hair dryer. In this way, film formation, which takes 20 to 30 minutes in conventional air drying, can be completed in about 5 minutes.

[Action/Effect]

According to the method of the present invention, film formation is promoted by a polymer compound having film-forming ability, and the pharmacological action of a hair removal drug is enhanced.

Therefore, by applying the method of the present invention, in a short time,
Hair removal treatment is performed beautifully without unpleasant odor or severe pain.

〔Example〕

Examples of the present invention will be shown below. In the text, % means weight %.

Example 1 Polyacrylamide 15% Calcium Thioglycolate 7% Silicon Dioxide
3% calcium hydroxide
2% water
73% 100% The composition consisting of the above components was dissolved in water to obtain a homogeneous aqueous solution containing a polymer compound. Apply this hair removal agent to the hair removal area for 5 minutes.
It was applied to a thickness of about 0 to 300 μm, and the area was heat-treated with a hair dryer. A film is formed in 5 minutes,
Body hair was trapped in the encapsulant. Due to the effect of the hair removal drug, the strength of body hair is reduced or melted, so when the film was peeled off from the skin, there was no pain, and the removed hair was removed cleanly without any residue.

Example 2 Natural rubber latex (50% base) 91% Sodium thioglycolate 7% Sodium hydroxide 2% 100% A composition consisting of the above components was mixed to form a homogeneous emulsion. As in Example 1, this hair removal agent was applied to the hair removal site to a thickness of about 50 to 300 microns, and the area was heat-treated with a hair dryer. forming a film,
When it was removed, the hair was removed without any pain.

Claims (1)

[Claims] A hair removal method comprising applying a depilatory agent containing an aqueous solution or emulsion of a polymeric compound capable of forming a film and a depilatory drug to a hair removal site, heat-treating the site to form a film, and peeling the film.