JPH0714859B2 - Permanent wave agents and methods - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cysteine-based permanent waving agent for repairing the condition of human hair or curling human hair to give a continuous curling pattern to the hair, and Regarding the method. In particular, the present invention relates to permanent waving agents and methods for forming "permanent" waves in human hair.

The present invention is from about 2.0% to about 6.5% by weight.
It contains about 4.5% to about 8.0% by weight of thioglycolate reducing agent, and has no offensive odor on the hair after perming, and also has curl formation, curl elasticity, manageability, and combability. Provided is a permanent waving agent that does not impair properties such as goodness, density, gloss, and soft feel. The permanent waving agent of the present invention can be used on the hair by water wrap or lotion wrap described later to form firm curls on the hair, with or without heating, and after further perming. It gives the hair a soft feeling as imparted by the acidic permanent waving agent without leaving an offensive odor.

[0003]

BACKGROUND OF THE INVENTION Generally, the permanent wave of human hair chemically breaks the sulfur-sulfur or disulfide cystine bonds inherent in human hair, and the hair is wound onto a rod. It is carried out through a step of repairing the cystine bond cleaved in the attached state. The sulfur-sulfur bond of human hair keeps the hair in its original straight or curled state, and in order to maintain the hair in a different shape continuously, most of the sulfur-sulfur bond is cut. And then the broken sulfur-sulfur bonds must be recombined after shaping the hair to the desired state, such as by winding the hair on a suitable mandrel or roller. Generally, the sulfur-sulfur bond is cleaved with a permanent agent containing a reducing agent, and after curling the hair around a rod or a roller, the hair is treated with hydrogen peroxide solution or water-soluble bromate. The sulfur-sulfur bond that has been cleaved on contact with the oxidizing agent is recombined or reformed.

Permanent wave agents or lotions used to cleave cystine bonds in human hair include
Generally, there are three basic types: acidic waving agents, alkaline waving agents, and neutral waving agents. Of these three types, the acidic and alkaline waving agents are of most commercial importance. Thioglycolic acid
(TG) alkali salt, for example, a permanent wave agent containing ammonium thioglycolate as a reducing agent,
It is known as an alkaline waving agent having a pH of about 7.5 to about 9.4. Conventionally, alkaline wave agents are cold wave agents because free alkali penetrates the hair shaft to swell the hair, and the reducing agent enters the hair shaft and breaks the sulfur-sulfur bond without heating. Was known as.

Glycerol monothioglycolate (GMTG)
Permanent waving agents containing is known as acidic waving agents, and the pH of these waving agents is about 9.0.
It may lead to. Acid Permanent Wave Agent
Generally, it is better than alkaline permanent waving agents
Due to the low pH, heating and / or prolonged treatment is required to facilitate the full reaction of the reducing agent. Alkaline permanent waving agents provide strong, long-lasting curls. On the other hand, acidic permanent waving agents provide a softer feel but have a shorter curl duration. Permanent waving agents containing alkali salts of thioglycolic acid and / or glycerol monothioglycolate leave a pronounced sulfur odor on the hair.

Most of the reducing action of mercaptan on keratin is the dissociation of thiol groups, that is, thiolate anion. Acidic permanent waving agents form sufficient curls on hair at lower pH compared to alkaline permanent waving agents because the wavy agents used for these permanents have low pKa values and are close to neutral. This is because it is in a dissociated (thiolate) state at a slightly acidic pH. Therefore pKa
The values show that some mercaptans are effective at high pH, while other mercaptans with low pKa values and high ionization constants are effective at low pH. For example, an alkali salt of thioglycolic acid, for example, an ammonium salt of thioglycolic acid (pKa = 10.4)
Is known to form an acceptable wave only when the pH of the solution exceeds 9.0. Zviak, Charles,
The Science of Hair Care, Permanent Waving and Ha
irStraightening (The Science of Hair Care, Permanent Wave and Hair Straightening), pp. 191, 19
See 1986. On the other hand, amides such as thioglycolamide (pKa = 8.4), and glycerol thioglycolate (pKa = 8.4)
Esters such as Ka = 7.8) are neutral and slightly acidic.
It is known to form an acceptable wave at pH.

The agent and method for permanent wave containing the reducing agent based on cysteine and thioglycolate of the present invention is very effective at a pH of about 7.5 to about 9.5, particularly about 9.0 to about 9.5. . Permanent waving agents with a pH near the lower end of the pH range (eg, about 7.5 to about 8.5) are most effective on bleached hair. On the other hand, a permanent waving agent having a pH close to the upper end (for example, about 9.0 to about 9.5) is most effective for normal hair and hair that is hard to curl. It is possible to provide several permanent waving agents which are particularly suitable for the permanent waving of hair under different conditions.

For example, a permanent waving agent for forming a permanent wave on normal hair and colored hair (hair with little damage) is about 5.0% to about 7.0% by weight thioglycollate and about 4.0% by weight. It contains from about 6% to about 6.0% cysteine by weight. Permanent wave agent for decolorized hair is about 3.5% by weight
From about 5.5% by weight thioglycolate and about 2.0% by weight
To about 4.0% by weight cysteine. Furthermore, the permanent wave agent for hair that does not curl easily
5.5 wt% to about 7.5 wt% thioglycolate, about
It contains from 5.0% to about 6.5% cysteine.

Various reducing agents are effective in cleaving the cystine bonds that crosslink human hair proteins at different pHs. Generally, low pH acidic permanent waving agents are reducing agents capable of cleaving sulfur-sulfur cystine bonds at low pH values, such as bisulfite salts such as ammonium bisulfite, or glycerol monothioglycolate. including. On the other hand, the alkaline permanent wave agent has a pH in the range of about 7.5 to 9.5, and the alkali easily permeates the hair shaft to swell the hair, so that the reducing agent easily permeates the hair and forms a sulfur-sulfur cystine bond. An alkali salt of thioglycolic acid or an alkali salt of dithioglycolic acid is required so as to be able to cleave.

For a person using a permanent wave lotion, the most difficult factor in determining the length of time the reducing agent is applied to the hair is probably the condition of the hair when the permanent wave is applied. Misuse of chemicals in shampoo, permanent wave, coloring, bleaching, bleaching, and especially in the treatment of hair with aqueous hydrogen peroxide,
It has been shown in the literature as well as in the prior art that hair can be damaged by mechanical treatments such as heat treatment, as well as environmental conditions such as climate and air pollution. In addition, damaged hair is compared to normal hair or undamaged hair, depending on the stage and extent of hair damage,
It is well known that it exhibits various chemical activities toward reducing agents. If the reducing agent causes the sulfur-sulfur bond in the hair to be severed too much, the hair may be seriously damaged and decomposed.

To provide the hair with the desired shape, for example, the ability to reshape it into a wound rod or roller, as well as the ability to maintain this shape, from about 20% to about 60% of the natural content of the hair shaft. It has been theoretically determined that the sulfur-sulfur cystine bond of C should be cleaved. Sulfur
If the cleavage of the sulfur bond is not sufficient, the unique shape of the hair, that is, the normal shape, becomes dominant, and the hair maintains the shape before the permanent wave. This is because the permanent bond or permanent bond in the hair retains the structure or shape of the hair before the permanent wave. When wet hair is straightened or wrapped around a roller, hydrogen bonds are physically broken. When the hair dries, hydrogen bonds are restored to their curled position or shape. Hydrogen bonds act to reshape the hair, but sulfur-sulfur cystine bonds are stronger than hydrogen bonds and significantly affect permanent wave forming power.

In order to form a sufficient permanent wave in the hair, when the hair is subsequently oxidized with a neutralizing agent, the newly reformed sulfur-into the curled hair is used.
The sulfur cystine bond must be as strong as the natural cystine hair bond prior to perming. Therefore, whether the hair is straight or curled naturally, when performing a permanent wave, the number of newly formed sulfur-sulfur cystine bonds in the hair having a new shape and before the perming is performed. It is desirable to equalize the number of remaining bonds that try to restore the hair to the state.

Generally, the reducing agent lotion is used after first shampooing the hair and before or after winding the hair on a suitable roller. How to use reducing agent lotion before wrapping your hair around the rod,
It is called lotion wrap.

On the other hand, a method in which hair is wrapped around a rod or a roller and then a reducing agent lotion is applied to the entire hair is called water wrap. In the case of lotion wrap, contact of the reducing agent with the hair begins when all rods are worn on the head, and with water wrap, the reducing agent contacts the hair when the use of the lotion is complete. Contact is initiated. Clearly, the water wrap method is desirable. This is because the lotion can be applied to all the hairs all at once in a short time, and can be washed off from the hair at once, so that the contact time of the reducing agent on the entire hair can be kept uniform.

The present invention provides a single formulation of an alkaline permanent waving agent. This alkaline permanent wave agent can be water-wrapped whether or not a dryer, heating cap, or other heat treatment is applied to increase the rate of reaction of the reducing agent. The permanent waving agent of the present invention forms a firm curl similar to alkaline waving agents and contains thioglycolate-containing permanent waving agents, such as those commonly associated with ammonium thioglycolate-containing permanent waving agents. The off-flavor after perm does not remain on the hair and gives the hair a soft feel as is exhibited by acidic waving agents.

[0016] The conventional alkaline waving agent containing thioglycollate as a reducing agent forms a firm curl, but is known to leave a rough feel on hair due to its high content of alkaline components. However, even when used together with cysteine, the conventional alkaline permanent preparations have a too high concentration of ammonium thioglycolate, which leaves a unique sulfur odor on the hair after perming, or has a weak perming ability. Become. Conventional acidic waving agents containing glycerol monothioglycolate also leave a strong sulfur odor on the hair. Acidic waving agents generally require heat to swell the hair and accelerate its reaction with the reducing agent, since at low pH the hair does not swell sufficiently. Cysteine of the present invention, a permanent waving agent containing a reducing agent containing thioglycolate as a main component solves the above-mentioned conventional drawbacks, even immediately after using the permanent waving agent, Does not leave offensive odor on permed hair.

[0017]

The present invention forms a strong and long-lasting curl similar to an alkaline permanent waving agent, and imparts to the hair the same flexibility as an acidic permanent waving agent, Further, the present invention relates to a weakly alkaline permanent wave reducing agent that does not leave an offensive odor on the hair after perming, and a method for corrugating or reforming human hair. Generally, the permanent waving agent of the present invention comprises a cysteine reducing agent selected from the group consisting of cysteine, cysteine salts such as cysteine hydrochloride, and mixtures thereof (2-amino-3-
(Mercaptopropionic acid) compound, and further includes monothioglycolate such as ammonium thioglycolate or monothioglycolic acid ester such as thioglycerin.

The amount of cysteine compound should be from about 2.0% to about 6.5% by weight, and for normal or pigmented (less damaged) hair.
4.0% to about 6.0% by weight, preferably about 5.0% by weight
And about 2.0% by weight for bleached hair
4.0% by weight, preferably about 2.0% to about 3.0% by weight
For hair that does not curl even more, about 5.0
% To about 6.5% by weight, preferably about 6.0% by weight. Similarly, the amount of thioglycollate can be varied to best suit the condition of the permanent waving hair. The amount of thioglycolate is about 4.5% by weight
To about 8.0% by weight, for normal or colored hair about 5.0% to about 7.0% by weight, preferably about 6.0% by weight, for bleached hair about 3.5% by weight. From about 5.5% by weight, preferably about
4.5% by weight, and for hair that is hard to curl, about 5.5% to about 8.0% by weight, preferably about
It is 6.5% by weight, and the pH of the permanent waving agent can be adjusted to about pH by adding excess alkali if necessary.
Adjust within the range of 7.5 to about 9.5. Optionally, a hair softener and / or a humectant such as glycerin comprises from about 0.1% to about 20% by weight of the permanent waving agent, preferably from about 0.1% to about 15%. Also optionally, one of silicone oil and / or silicone gum and / or a quaternary conditioning agent.
Conditioning agents of one or more types also comprise from about 0.1% to about 20% by weight of the permanent waving agent to provide conditioning properties and hair shine. In addition, fragrances and other common additives are added at about 0.1% by weight of the usual amount of permanent waving agents.
From about 5.0% by weight. The permanent waving agent of the present invention is easy to use, causes less damage to hair, and forms a strong, firm curl to finish hair more than expected. Surprisingly, the permanent waving agent of the present invention leaves no odor on the hair after perming. As described above, the permanent wave agent of the present invention can be applied to a water wrap or a lotion wrap regardless of the presence or absence of heating.

Accordingly, it is the gist of the present invention to provide a new and improved permanent waving agent capable of cleaving the sulfur-sulfur bonds of human hair and reforming the hair into different shapes. It is to be. The sulfur-sulfur bond of human hair recombined with an oxidant is
The new hair shape can be maintained for a long period of time.

Another aspect of the present invention is to provide a novel combination of cysteine and a thioglycollate reducing agent which can effectively cleave the sulfur-sulfur bond and leave no odor on the hair after perming. Is to provide an improved permanent wave lotion.

Another optional feature of the present invention is a hair softener and a hair moisturizer which further improve the softness and gloss of the hair without leaving a noticeable odor on the hair by using the permanent waving agent of the present invention. The object is to provide a permanent wave agent comprising a permanent wave reducing agent containing.

The subject matter and advantages of the present invention will become apparent from the detailed description of the preferred embodiment which follows.

[0023]

EXAMPLES The present invention can be used as a weakly alkaline permanent wave agent on hair by either water wrap or lotion wrap method, and gives the hair an unexpectedly soft feeling as exhibited by acidic wave agents. Permanent wave consisting mainly of cysteine and thioglycolate for permanent wavy hair that forms a firm curl that lasts for a long time like alkaline waving agents and does not leave an unpleasant odor on the hair after perming. Regarding agents. The performance of applying a permanent wave to hair using a reducing agent containing cysteine and thioglycolic acid as a main component and leaving no offensive odor on the hair after perming is unique in the art.

The permanent waving agent of the present invention is a weakly alkaline permanent wave conditioning agent capable of forming a wave or reforming the hair shape of human hair, and is as strong as an alkaline permanent waving agent, While forming a curl that lasts for a long period of time, it imparts a soft feel to the hair as exhibited by an acidic permanent waving agent, and does not leave an offensive odor on the hair after perming. Generally, the permanent waving agent of the present invention comprises about 2.0% to about 6.5% by weight of a cysteine compound selected from the group consisting of cysteine, cysteine salts, and mixtures thereof, and about 4.5% by weight of thioglycolate. From about
Contains 8.0% by weight.

The pH of the reducing agent of the present invention is about 7.5 to about 9.5.
Is. The preferred pH will depend on the type of hair to which the permanent wave is applied, but is obtained by adding alkanolamines, ammonia, ammonium carbonate, and / or metal hydroxides to the permanent wave agent of the present invention. Optionally, the reducing agent of the present invention is a hair lubricant and / or selected from polyhydroxyl alkyl compounds, polyalkylene glycol glycerol ethers, ethoxylated fatty alcohols, fatty alcohol polyglycol ethers, and mixtures thereof.
Or from about 0.1% to about 20% by weight of softener, especially about
Contains 0.1 to 15% by weight.

In a preferred embodiment of the invention, the permanent waving agent of the present invention further comprises from about 0.1% to about 10% by weight.
% By weight, especially from about 0.5% to about 10% by weight, preferably from about 1.0% to about 5.0% by weight of the non-volatile silicon compound or other conditioning agent (s), such as polymerized quaternary ammonium salts, It preferably contains an insoluble emulsifiable conditioning agent.
A preferred non-volatile silicone compound is a polydimethylsiloxane compound, such as a mixture of low molecular weight polydimethylsiloxane liquid and high molecular weight polydimethylsiloxane gum in a weight ratio of about 3: 1. The non-volatile polydimethylsiloxane compound is added in an amount sufficient to provide good combing and feel (flexibility) of hair after shampooing.
It is added to the permanent waving agent of the present invention. The "silicone gum" referred to herein is a non-functional siloxane having a viscosity at 25 ° C of about 5 to about 600,000 centistokes. The so-called rigid silicon, described in U.S. Pat.No. 4,902,499, previously mentioned herein by reference, has a viscosity at 20 ° C. of 600,000 centistokes or more, such as 700,000 centistokes or more and an average molecular weight of about 500,000 or more. Are useful in the present invention.

A preferred silicone gum comprises a chain polydimethylsiloxane and a branched polydimethylsiloxane of the general formula:

[0028]

[Chemical 1]

In the above formula, n is about 2,000 to about 15,000, preferably about 2,000 to about 7,000. Silicone gums useful in the permanent waving agents of the present invention are available from manufacturers such as General Electric Company and Dow Corning.

Other suitable conditioning agents that may be included in the permanent waving agent of the present invention are volatile hydrocarbons such as hydrocarbons having from about 10 to about 30 carbon atoms, either aerosol or non-aerosol. It has sufficient volatility to slowly evaporate from the hair after using the styling aid. Volatile hydrocarbons provide essentially the same benefits as silicon conditioning agents.

Preferred volatile hydrocarbon compounds are aliphatic hydrocarbons containing from about 12 to about 24 carbon atoms and having a boiling point in the range of about 100 ° C to about 300 ° C. The general structural formulas of typical volatile hydrocarbons are shown below. In the formula, n is 2 to 5.

[0032]

[Chemical 2]

A commercially available compound PERME is used as a volatile hydrocarbon useful in the permanent waving agent of the present invention.
There are THYL 99A and PERMETHYL 101A, and these compounds correspond to the compounds of the above structural formulas, and n in the formulas is 2 respectively.
And 3. These compounds are available from Permethyl Corporation, Fraser, PA. The volatile hydrocarbon compound is useful in the permanent waving agent of the present invention alone, in combination with other volatile hydrocarbons, or in combination with volatile silicon.

Other suitable insoluble conditioning agents that can be incorporated into the permanent waving agents of the present invention include the CTFA Cosme disclosed herein by reference.
ticIngredient Dictionary No. 3
Ed., Quaternized Polymerized Quaternary Ammonium Salts as defined on page 245 of 1982, eg Polyquaternium 1 to Polyquaternium.
14 and the conditioning agent (Polyquaternium
There are any combination of 1 to Polyquaternium14). Preferred conditioners are Polyquaternium-4, Polyqu
aternium-10 and Polyquaternium-11. If a conditioner is added, the conditioner content should be from about 0.01% to about 2.0% by weight of the permanent waving agent.

Other general cosmetic additives can be added to the permanent waving agent of the present invention as long as the basic properties of the permanent waving agent are not adversely affected. Such additives include, but are not limited to, commonly used fragrances,
There are dyes, opacifiers, pearlescent agents, thickeners, foam stabilizers, preservatives, water softeners, acids, bases, buffers, etc., and these respective additives are usually contained in an amount of about 1% by weight or less, and added. It is contained in a total amount of about 2% by weight to about 5% by weight. The base of the permanent waving agent is mainly water, but an organic solvent can be added to the permanent waving agent in order to dissolve a compound which is not sufficiently dissolved in water. Suitable solvents include lower alcohols consisting of ethanol, isopropanol, and mixtures thereof. These solvents can comprise from about 1% to about 75% by weight, in particular from about 5% to about 50% by weight, based on the total weight of the hair setting composition of the present invention.

The permanent waving agent of the present invention may optionally contain, for example, sodium alginate, gum arabic,
The viscosity can also be increased by using various polymerization thickeners such as cellulose derivatives such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and carboxymethyl cellulose, and polymers of acrylic acid or polymerized acrylic acid derivatives. Further, an inorganic thickener such as bentonite may be used. When including these thickeners, they preferably contain from about 0.1% to about 10% by weight, in particular from about 0.5% to about 3% by weight, based on the total weight of the permanent waving agent.

The permanent waving agent of the present invention, when a polyhydric alcohol such as ethylene glycol, glycerin, propylene glycol, or polyoxyethylene glyceryl ether, or a polyhydroxyalkane compound is optionally used, the hair has a moisturizing property of these substances. It provides a better condition, and a uniform and natural curl is formed on the hair.

These wetting agents include polyhydroxyalkyl compounds, especially alkylene glycols and polyalkylene glycols, especially ethylene glycol and polyethylene glycol; propylene glycol and polypropylene glycol; polyethylene glycol glyceryl ether; ethoxylated fatty alcohols; and fatty alcohol polyglycols. Select from the group consisting of ethers. Suitable wetting agents include glycerin, ethylene glycol, propylene glycol, 1,3-
Butylene glycol, 1,2,6-hexanetriol, 1,5-
There are glycols and triols such as pentanediol, 2-ethylpentanediol-2,4, and 2-ethylhexanediol-1,3. Further, a compound suitable as a wetting agent is polyalkylene glycol, which has the following structural formula.

[0039]

[Chemical 3]

In the above formula, R is H or CH ₃ and n has an average value of 2 to 600. When R is H, suitable wetting agents are in the range of n from 4 to 600, and when R is CH ₃ ,
Suitable wetting agents have n in the range 2 to 34. The polyalkylene glycol that can be optionally used as the wetting agent for the permanent wave agent of the present invention is not limited to these, but polyethylene glycol
There are 200, polyethylene glycol 400, polyethylene glycol 600, polypropylene glycol 150, tetraethylene glycol, and dipropylene glycol.

Other suitable wetting agents are polyethylene glycol glyceryl ethers such as polyethylene glycol 600 glyceryl ether and polyethylene glycol 26 glyceryl ether. Furthermore, ethoxylated nonylphenol and ethoxylated octylphenol, especially nonoxynol [(C ₉ H ₁₉ C ₆ H ₄ (O
CH ₂ CH ₂ ) _n -OH, n averaging at least 6 to about 10
0], octoxynol, [C ₈ H ₁₇ S ₆ H ₄ (OCH ₂ C
H ₂ ) _n- OH, n on average is at least 7 to about 40],
It is a wetting agent suitable for the permanent wave agent of the present invention. Examples of the ethoxylated fatty alcohol suitable for the wetting agent of the permanent waving agent of the present invention include compounds having the structural formula [R- (OCH ₂ CH ₂ ) _n -OH], wherein R is about Containing from 12 to about 30 carbon atoms, n averages at least 6 and constitutes an alkyl group. Furthermore, the following structural formula

[0042]

[Chemical 4]

The fatty alcohol polyglycol ethers wherein R is an alkyl group containing from about 8 to about 18 carbon atoms, n is 0 to 6, m is 0 to 6, and n + m is at least 6 are also contemplated by the invention. It is useful as a wetting agent for permanent wave agents.

The permanent waving agent of the present invention is easy to use, does not leave an unpleasant odor on the hair after perming, forms a strong and firm curl, and makes the hair more flexible than expected. The permanent waving agent of the present invention can be applied to hair by lotion wrap or water wrap regardless of whether or not it is heated.

Four types of reducing agent-containing permanent waving agents containing cysteine and ammonium thioglycolate were prepared. Cysteine is known to perform the same reducing function as salts of cysteine such as strong mineral acid salts formed from phosphoric acid and sulfuric acid, and salts similar to the strong mineral acid salts such as cysteine hydrohydrochloride.

Four types of reducing agent-containing permanent waving agents of the present invention were prepared as follows.

[0047]

[Table 1]

[0048]

[Table 2]

[0049]

[Table 3]

[0050]

[Table 4]

Reducing Agent-Containing Permanent Wave Agent 1
Was tested for use on hair at the Helene Curtis, Inc. Salon Testing Center. The permanent waving agent 1 was oxidized by a neutralizing agent containing hydrogen peroxide solution as a main component. None of the subjects who used the permanent waving agent pointed out the offensive odor of the hair after perming, and all the subjects were very satisfied with the soft and natural feel of the hair. Similarly, the permanent waving agents 2, 3 and 4 did not leave an offensive odor on the hair after perming.

The following conventional permanent waving agent 5 disclosed in US Pat. No. 4,913,900 forms excellent curls, but leaves a strong offensive odor on the hair after perming.

[0053]

[Table 5]

The following permanent waving agent 6 contained too little thioglycolate and did not leave an unpleasant odor on the hair after perming, but formed a very weak curl.

[0055]

[Table 6]

It will be apparent that various modifications and alterations of the invention shown herein can be made within the spirit and scope of the invention and therefore within the scope of the appended claims. The present invention should be construed as follows.

Front Page Continuation (72) Inventor Alan Nandajiri United States 60048 Illinois Libertyville Greenbriar 1680 (56) Reference JP-A-1-149711 (JP, A) Patent 4913900 (JP, A)

Claims (15)

[Claims] 1. About 2.0% to about 6.5% by weight of a cysteine compound selected from the group consisting of cysteine, cysteine salts, and mixtures thereof; about 4.5% to about 8.0% alkaline thioglycolate; and
cleaving the sulfur-sulfur bond in human hair by contacting the hair with human hair to impart a permanent wave to the hair, which is composed of an aqueous solution containing sufficient alkali to adjust the pH from about 7.5 to about 9.5; A permanent waving agent having the ability to form the hair, in which the sulfur-sulfur bond is cut, into a desired shape. 2. Cysteine is about 4.0% to about 6.0% by weight, and alkaline thioglycolate is about 5.0% to about 7.0% with respect to the permanent waving agent.
% Of the permanent wave formulation
The permanent waving agent according to claim 1, which has a pH of about 9.0 to about 9.5. 3. Cysteine in an amount of about 5.0% to about 6.5% by weight and alkaline thioglycolate in an amount of about 5.5% to about 7.5% based on the permanent waving agent.
% Of the permanent wave formulation
The permanent waving agent according to claim 1, which has a pH of about 9.0 to about 9.5. 4. The permanent waving agent contains about 2.0% to about 4.0% by weight of a cysteine compound and about 3.5% to about 5.5% by weight of an alkaline thioglycolate, and the permanent wave is further included. The permanent waving agent according to claim 1, wherein the pH of the agent is about 7.5 to about 8.5. 5. The permanent waving agent according to any one of claims 1 to 4, wherein the alkaline thioglycolate is ammonium thioglycolate. 6. A conditioning agent selected from the group consisting of silicon and polymerized quaternary ammonium compounds, further comprising from about 0.1% to about 20% by weight, based on the permanent waving agent. Permanent wave agent. 7. A wetting agent selected from the group consisting of polyhydroxyalkyl compounds, polyalkylene glycols, glyceryl ether compounds, ethoxylated fatty alcohols, ethoxylated alkylphenols, fatty alcohol polyglycol ether compounds, and mixtures thereof. The composition further comprises about 0.1% to about 20% by weight of the permanent waving agent.
The agent for permanent wave described in 1. 8. The amount of cysteine is about 4.0% by weight to about 6.0% by weight, and the alkaline thioglycolate is about 5.0% by weight to about 7.0% with respect to the permanent wave agent.
% Of the permanent wave formulation
8. The permanent waving agent according to claim 7, which has a pH of about 9.0 to about 9.5. 9. Cysteine is used in an amount of about 5.0% by weight to about 6.5% by weight, and alkaline thioglycolate is used in an amount of about 5.5% by weight to about 7.5% of the permanent waving agent.
% Of the permanent wave formulation
8. The permanent waving agent according to claim 7, which has a pH of about 9.0 to about 9.5. 10. The permanent waving agent contains a cysteine compound in an amount of about 2.0% by weight to about 4.0% by weight and an alkaline thioglycolate in an amount of about 3.5% by weight to about 5.5% by weight. The permanent waving agent according to claim 7, wherein the pH of the agent is about 7.5 to about 8.5. 11. A cysteine compound selected from the group consisting of cysteine, cysteine salts, and mixtures thereof from about 2.0% to about 6.5% by weight, alkaline thioglycolate from about 4.5% to about 8.0% by weight, pH.
To about 7.5 to about 9.5, a water-soluble reducing agent-containing permanent waving agent containing sufficient alkali is brought into contact with the hair, and the reducing agent-containing permanent waving agent is constantly applied to the hair while the hair is formed into a desired shape. A method of cleaving the sulfur-sulfur bond of human hair to reshape the hair into the desired shape, which comprises removing the reducing agent-containing permanent waving agent from the hair after contact for a period of time. 12. A curling shape of human hair when contacted with a reducing agent-containing permanent waving agent,
The hair is wrapped around each mandrel using multiple mandrels to reshape the curls and formed into the desired shape that was first removed from the mandrel after contact with the permanent waving agent for a period of time. 12. The method further comprising the step of sequentially removing the mandrel from the hair without testing the curl strength of the broken hair.
The method of cleaving the sulfur-sulfur bonds of human hair according to to reshape the hair into the desired shape. 13. Cysteine is about 4.0% to about 6.0% by weight, and alkaline thioglycolate is about 5.0% to about 7.0% with respect to the permanent waving agent.
% Of the permanent wave formulation
12. The permanent waving agent according to claim 11, which has a pH of about 9.0 to about 9.5. 14. Based on the permanent waving agent, about 5.0 wt% to about 6.5 wt% cysteine and about 5.5 wt% to about 7.5 wt% alkaline thioglycolate.
% Of the permanent wave formulation
12. The permanent waving agent according to claim 11, which has a pH of about 9.0 to about 9.5. 15. The permanent waving agent contains a cysteine compound in an amount of about 2.0 wt% to about 4.0 wt% and an alkaline thioglycolate in an amount of about 3.5 wt% to about 5.5 wt%, and further includes the permanent wave. 12. The permanent waving agent according to claim 11, wherein the pH of the agent is about 7.5 to about 8.5.