JPH0764712B2 - Hair remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a depilatory agent for dehairing human hair, specifically, it has extremely little pain during depilation, and has very little irritation or side effects on the skin. The method also relates to a simple hair remover.

[Conventional technology]

2. Description of the Related Art Conventionally, wax removers such as wax type, adhesive type, and adhesive type have been known as a dehairing agent used when a woman removes unwanted hair on her arms and legs. Most of the depilatory agents have skin irritation and side effects.

[Problems to be solved by the invention]

Wax type depilatory is dissolved by heating and applied to the skin.
It is peeled off as a film after cooling and solidification, but it has adhesiveness, but since it contains rosin as a main component, it has a safety problem that it will hurt the skin in people with weak skin, and it will remain on the skin,
Workability is poor because cleaning with a special soap is required. Adhesive and adhesive type depilatory removes hair by pulling it forcibly and feels abnormal pain. As described above, most of the conventional hair removers have poor workability, and most of them have irritation and side effects on the skin during hair removal.

It is an object of the present invention to provide a depilatory having excellent workability and having very little skin irritation and side effects during depilation.

[Means for solving problems]

The present inventors have conducted various studies and studies to achieve the above-mentioned object, and as a result, when the water-soluble and / or alcohol-soluble resin adheres to hair, skin or the like, it shows a special affinity for hair, Moreover, they have found that they can be easily removed with water, and have completed the present invention.

That is, the first invention of the present application is a depilatory comprising a water-soluble and / or alcohol-soluble resin, a plasticizer and a solvent as main components, and optionally a bactericide, an anti-inflammatory agent, a preservative or a neutralizing agent. The depilatory agent is characterized in that it is applied in a liquid or paste form, applied, paper, cloth, plastic or metal adhered onto it, dried and peeled off before use.

Further, the second invention of the present application is a depilatory component 95 comprising a water-soluble and / or alcohol-soluble resin, a plasticizer and a solvent as main components, and optionally a bactericide, an anti-inflammatory agent, a preservative or a neutralizing agent. -40 to 40% by weight and 5 to 60% by weight of liquefied gas as a propellant, which can be discharged in the form of paste, foam, foam or mist, coated and then applied on paper, cloth, plastic or metal. It is a type that is used by adhering, peeling after drying, and used.

Hereinafter, the present invention will be described in detail.

Examples of the water-soluble and / or alcohol-soluble resin used in the present invention include polyacrylic acid, polymethacrylic acid, polyacrylic acid ester, polymethacrylic acid ester, acrylic acid ester / methacrylic acid ester copolymer, acrylic acid / vinyl acetate copolymer. Combined, sodium polyacrylate, sodium polymethacrylate, polyvinylpyrrolidone, polyvinyl acetate, polyvinylpyrrolidone-vinyl acetate copolymer, polyvinyl alcohol / polyvinyl acetal, polyvinyl ether, phenol resin, maleic acid resin, etc. It is preferable to use acid ester / methacrylic acid ester copolymer, acrylic / vinyl acetate copolymer, polyvinylpyrrolidone, polyvinylpyrrolidone / vinyl acetate copolymer, either alone or in combination of two or more. There.

The water-soluble and / or alcohol-soluble resin is used in the selection of the resin because when it is adhered to hair or skin,
Having a special affinity for hair is that it can be washed briefly with water after hair removal.

Next, as the plasticizer, any plasticizer can be used as long as it imparts plasticity to the resin film to be formed. For example, glycerin, ethylene glycol, propylene glycol, polyethylene glycol, polypropylene glycol, sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene sorbitan fatty acid, polyoxyethylene alkyl ether, isopropyl myristate, dimethyl phthalate, Examples thereof include dibutyl phthalate, lauryl alcohol, cetyl alcohol, myristyl alcohol, lanolin, lanolin alcohol, castor oil and the like. Specific preferred examples thereof include glycerin glycol, preferably ethylene glycol, propylene glycol, polyethylene glycol, polypropylene glycol, surfactants, preferably sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene sorbitan fatty acid. These plasticizers, which are esters, polyoxyethylene alkyl ethers, fatty alcohols, preferably lauryl alcohol, cetyl alcohol, myristyl alcohol, may be used alone or in combination of two or more. Also, these plasticizers have little skin irritation.

Next, as the solvent, a solvent which is not toxic and is less irritating to the skin is suitable. Specific examples of this include purified water, trichloromonofluoromethane (hereinafter referred to as F11), trichlorofluoroethane (hereinafter referred to as F113),
Examples thereof include ethanol, denatured ethanol and isopropyl alcohol. Even if these solvents are used alone, 2
You may mix 1 or more types. When ethanol, denatured ethanol and isopropanol are used, it is preferable that F11 and / or F113 are used in common because it becomes a non-hazardous substance and further increases safety.

Further, the hair remover of the present invention includes bactericides such as triclosan, anti-inflammatory agents such as allantoin and azulene, preservatives such as paraoxybenzoate ester, triethanolamine, 2
-Amino-2-methyl-1,3-propanediol, 2-
A neutralizing agent such as amino-2-methyl-1-propanol and sodium hydroxide may be added as appropriate, and a pigment, dye or the like may be added as appropriate in order to make the formed resin film look more beautiful.

The hair remover of the present invention is prepared by mixing the above water-soluble and / or alcohol-soluble resin, a plasticizer, a solvent, and if necessary, a bactericidal agent, an anti-inflammatory agent, an antioxidant, or a neutralizing agent in an appropriate amount range. Manufactured.

The hair remover of the present invention produced in this manner is applied to the hair removal site in an appropriate amount as it is in a liquid, paste or foam form.
It is used by adhering paper etc. on it, peeling it after drying, and is different from conventional wax type, adhesive type, adhesive type dehairing agent in form, usage etc., and many advantages Have.

When the water-soluble and / or alcohol-soluble resin is less than 10% by weight in the hair remover of the present invention, the resin film formed has a weak adhesion to thin hair and slows drying, and also has a water-soluble and / or water-soluble property. Or if the alcohol-soluble resin exceeds 70 parts by weight, the viscosity of the stock solution increases,
Since the workability is deteriorated, it is appropriate that the water-soluble and / or alcohol-soluble resin is in the range of 10 to 70% by weight. Further, if the plasticizer is less than 3% by weight, the plasticity of the formed resin film decreases, and if it exceeds 30% by weight, the plasticity may increase and the hair removal effect may be lost.
It is suitable to be in the range of up to 30% by weight. Also the solvent
When it is less than 20, the viscosity of the stock solution becomes high and the workability deteriorates,
If the amount of solvent exceeds 90, the resin film will have a weak adhesion to hair and drying will be slow, so the solvent should be 20-90.
It is suitable to set it within the range of weight%.

Next, the use and usage form of the hair remover of the present invention will be described.

As described above, the depilatory of the present invention is applied to the depilatory site in the form of foam, foam, semi-kneading or liquid, and then paper, cloth,
It is used by adhering plastic or metal and peeling off after a few seconds to a dozen minutes. The paper used in the above may be ordinary paper such as Japanese paper and Western paper. The difference in waiting time from several seconds to several tens of minutes is due to the composition of the depilatory, and it takes a short time if the drying is fast and a long time if the drying is slow. For application in the form of paste, foam, foam or mist, it is advantageous to use an aerosol product. To form an aerosol, 95 to 40% by weight of the depilatory component of the present invention and 5 to 60% by weight of a liquefied gas as a propellant are filled in an aerosol container by a conventional method, and an aerosol valve and a button are attached to form an aerosol. Can be a product. If the hair remover component is less than 40% by weight, the adhesive force to the hair will be weak, and it will be difficult to achieve the purpose. If it is 95% by weight or more, the liquefied gas as a propellant will be 5% or less. Since the jetting force becomes weak, it is 95-40 as a depilatory component.
It is suitable to set it in the range of% by weight. Further, when the propellant is used in an amount of 60% by weight or more, the depilatory component becomes 40% by weight or less, and the adhesive strength is weakened, which makes it difficult to achieve the purpose. Liquefied gas mainly acting as a propellant includes dichlorodifluoromethane (hereinafter referred to as F12), monochlorodifluoromethane (hereinafter referred to as F22), dichlorotetrafluoroethane (hereinafter referred to as F114), dimethyl ether (hereinafter referred to as DME), and liquefied gas. Petroleum gas (composed of propane, normal butane, and isobutane as main components),
Alternatively, a mixed liquefied gas selected from these is preferable.

Currently, F12 is used as an instant remedy for bruising, which aims to cool the affected area by the heat of vaporization of F12 while spraying. The same thing can be said for aerosol depilatory, F12, F2 with low boiling point
2. Applying propane, etc., paralyzes the hair-removed area, so it is desirable to use a large amount of these liquefied gases.

Further, in order to apply in a semi-kneaded state or in a liquid state, it is convenient to apply it by an extrusion method using a plastic container such as polyethylene or a double container method of an aerosol product.

Next, the effect of the hair remover of the present invention will be described with reference to test examples.

Test Example Targeting 20 women (18 to 40 years old), Examples 1 to 1 described below
Table 1 shows the results of an examination of pain, irritation or side effects, and workability of hair removal when each product of 5 was actually applied to the hair removal site and hair was removed.

In addition, in order to evaluate the pain at the time of hair loss, those with no pain were evaluated as ○, the degree with which there was a little pain without feeling pain was evaluated as △, and the condition with pain felt as pain was evaluated as ×. Shown in the table. Regarding skin irritation or side effects, those that have no irritation or side effects are ○, those that want to be stuffed a little, that there is an unpleasant degree of irritation are △, those that are too cold, have irritation, or have discomfort. X and
The number of persons corresponding to each is shown in Table 1. Also, regarding the workability of hair removal, ○ is easy and good, △ is the same as the conventional hair remover, and × is difficult to use, and the number of people corresponding to each is shown in Table 1. It was Further, in the comprehensive evaluation, ⊚ indicates very good, ∘ indicates good, and Δ indicates not good.

In addition, as a comparative example, Table 1 shows the results of the same investigation as described above with respect to a commercially available wax type dehairing agent (which is melted by applying heat and then applied to the depilatory part to perform depilation work).

From the results shown in Table 1, it can be seen that the hair remover of the present invention is excellent.

Next, examples of the present invention will be described. All parts in the examples are parts by weight.

Example 1 55 parts of polyvinylpyrrolidone / vinyl acetate copolymer (trade name, manufactured by Rubiscol VA64 Yuka Birdish Co., Ltd.) as a water-soluble resin, 20 parts of glycerin as a plasticizer, 22.9 parts of purified water as a solvent, and an anti-inflammatory agent. As allantoin 0.1 part,
2 parts of triethanolamine was mixed as a neutralizing agent to obtain a liquid depilatory.

Example 2 Liquid depilator by mixing 40 parts of polyvinylpyrrolidone as a water-soluble resin, 15 parts of polypropylene glycol-200 as a plasticizer, 24.95 parts of isopropyl alcohol as a solvent and 20 parts of trichlorotrifluoroethane, and 0.05 parts of triclosan as a bactericide. Got

Example 3 Polyvinylpyrrolidone / vinyl acetate copolymer (trade name: Rubiscol 73E, manufactured by Yuka Birdish Co., Ltd., 50% ethanol solution) as an alcohol-soluble resin 25 parts, cetyl alcohol as a plasticizer 2 parts and polyethylene glycol- 200 3 parts, triethanolamine 0.3 as neutralizing agent
Parts, 0.01 parts triclosan as a bactericide, F11 as a solvent
A mixture of 41.69 parts and 28 parts of F12 as a propellant was further added to form a depilatory capable of discharging foam, and this was filled in an aerosol container to obtain an aerosol depilatory product.

Example 4 24 parts of polyvinylpyrrolidone as a water-soluble resin, 3 parts of sorbitan fatty acid ester (NKKOLSO-30, manufactured by Nikko Chemicals Co., Ltd.) as a plasticizer, and 6 parts of propylene glycol,
As a solvent, 10 parts of sicrose denatured alcohol, 24 parts of F11 and 8.9 parts of F113, 0.1 part of paraoxybenzoic acid ester as a preservative are mixed, and further 24 parts of DME is added as a propellant to form a defoaming agent that can be discharged in the form of foam. Was filled in an aerosol container to obtain an aerosol depilatory product.

Example 5 As an alcohol-soluble resin, an acrylic acid ester / methacrylic acid ester copolymer (trade name plus size L-53
P, Mutoh Chemical Industry Co., Ltd., 50% denatured alcohol solution,
2-amino-2-methyl-1-propanol used as a neutralizing agent) 40 parts, polyethylene glycol-40 as a plasticizer
A mixture of 10 parts of F11 and 30 parts of F11 as a solvent and 20 parts of DME as a propellant were added to form a defoaming agent capable of being discharged in the form of foam, which was filled in an aerosol container to obtain an aerosol depilatory product.

〔The invention's effect〕

As described above, the hair remover of the present invention has less pain during hair removal than conventional hair removers, has good workability, has less irritation to the skin, and is capable of removing hair over a wide range in a short time. Therefore, it is a useful depilatory like no other.

Claims (16)

[Claims] 1. A depilatory comprising a water-soluble and / or alcohol-soluble resin, a plasticizer and a solvent as main components, and optionally a bactericide, an anti-inflammatory agent, a preservative or a neutralizing agent, A depilatory, characterized in that it is in a liquid or paste form and is applied, paper, cloth, plastic or metal is adhered onto it, dried and then peeled off before use. 2. A compounding ratio of a depilatory component is 10 to 70% by weight of a water-soluble and / or alcohol-soluble resin, 3 to 30% by weight of a plasticizer, and 20 to 90% by weight of a solvent. The hair remover according to claim 1. 3. The water-soluble and / or alcohol-soluble resin is selected from an acrylic acid ester / methacrylic acid ester copolymer, an acrylic / vinyl acetate copolymer, polyvinylpyrrolidone, a polyvinylpyrrolidone / vinyl acetate copolymer, or a combination thereof. The depilatory agent according to claim 1, which is a mixture. 4. The depilatory agent according to any one of claims 1 to 3, wherein the plasticizer is glycerin, glycol, a surfactant, a fatty alcohol or a mixture thereof. 5. The hair remover according to claim 4, wherein the glycol is ethylene glycol, propylene glycol, polyethylene glycol or polypropylene glycol. 6. The depilatory according to claim 4, wherein the fatty alcohol is lauryl alcohol, cetyl alcohol or myristyl alcohol. 7. A sorbitan fatty acid ester as the surfactant,
The depilatory agent according to any one of claims 1 to 6, which is a glycerin fatty acid ester, a polyoxyethylene alkyl phenyl ether, a polyoxyethylene sorbitan fatty acid ester, or a polyoxyethylene alkyl ether. 8. The method according to any one of claims 1 to 7, wherein the solvent is purified water, trichloromonofluoromethane, trichlorotrifluoroethane, ethanol, denatured ethanol, isopropyl alcohol, or a mixture selected from these. Hair remover. 9. A depilatory component 95-40 containing a water-soluble and / or alcohol-soluble resin, a plasticizer and a solvent as main components, and optionally a bactericide, anti-inflammatory agent, preservative or neutralizing agent. Wt% and liquefied gas as propellant 5-60
It is composed by weight and can be discharged in the form of paste, foam, foam or mist. It is a type that is used by applying it, adhering paper, cloth, plastic or metal on it, peeling it after drying. A depilatory characterized by the following. 10. A depilatory component blending ratio of water-soluble and / or alcohol-soluble resin 10 to 70% by weight, plasticizer 3 to 30.
The hair remover according to claim 9, wherein the hair remover is 20% by weight to 90% by weight of the solvent. 11. A water-soluble and / or alcohol-soluble resin is an acrylic acid ester / methacrylic acid ester copolymer, an acrylic / vinyl acetate copolymer, polyvinylpyrrolidone, a polyvinylpyrrolidone / vinyl acetate copolymer,
Alternatively, the depilatory agent according to claim 9 or 10, which is a mixture selected from these. 12. The depilatory according to any one of claims 9 to 11, wherein the plasticizer is glycerin, glycol, a surfactant, a fatty alcohol or a mixture thereof. 13. The depilatory agent according to claim 12, wherein the glycol is ethylene glycol, propylene glycol, polyethylene glycol or polypropylene glycol. 14. The fatty alcohol is lauryl alcohol,
The hair remover according to claim 12, which is cetyl alcohol or myristyl alcohol. 15. The surfactant according to claim 9, wherein the surfactant is sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether. The hair remover described in 1. 16. The solvent is purified water, trichloromonofluoromethane, trichlorotrifluoroethane, ethanol,
Claims 9 to 15 which are denatured ethanol, isopropyl alcohol, or a mixture selected from these.
The depilatory according to any one of items.