KR100778054B1 - Method of permanent wave treatment - Google Patents

Abstract

The perm treatment method of the present invention is a method designed to provide a perm treatment process capable of sustaining the hair straight state of the hair for a long time. The treatment method of the present invention comprises a permeation step of adhering the perm treatment solution containing chioglycolic acid to a position proximate to the hair root of the hair to penetrate the perm treatment solution into the hair root; And a shaping step of stretching the hair to form a straight hair while warming the hair in a state where the perm treatment liquid is attached to a predetermined temperature. According to the perm treatment method, hair newly grown after the perm treatment is straight hair.

Description

How to handle perm {METHOD OF PERMANENT WAVE TREATMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating perm for shaping hair into a desired shape, and more particularly to a method for treating perm for straightening hair with straight hair.

BACKGROUND OF THE INVENTION As a perm treatment method for straightening curved hairs, various methods known as straight perm or curly hair straightening are known. These methods are methods in which a perm treatment liquid containing a reducing agent and an oxidant are applied to the hair to shape the hair into straight hair. In this detailed description, the perm treatment method for shaping hair into straight hair is called a perm treatment method. Furthermore, in this detailed description, curved hairs generally called wave hairs or curly hairs are called curly hairs, and hairs whose shape is not curved are straight hairs.

As the perm treatment liquid adopted in the perm treatment method, it is known to include thioglycolic acid or salts thereof as the reducing agent.

When the perm treatment liquid adheres to the hair, cystine constituting keratin, which is the main component of the hair, is reduced by hydrogen ions generated from thioglycolic acid to open the S-S bond of the cystine. As a result, the elasticity of the hair is reduced and plasticity is provided thereto, whereby the hair can be shaped into a desired shape. In this state, the hair is physically lengthened by compressing or pulling the hair. Then, an oxidizing agent is applied to the hair to close the S-S bond in the lengthened state of the hair, whereby the hair is shaped into a straight hair shape. In the oxidizing agent used in this specification, bromate, such as sodium bromide, perborate, such as sodium perborate, hydrogen peroxide, oxygen in air, etc. are employ | adopted (for example, patent document 1-2).

In patent document 1, after the perm treatment liquid containing a reducing agent is applied to hair, the said hair is compressed, and the perm treatment method which maintains the straight hair state of curly hair for a long time is described.

Moreover, in patent document 2, after the perm treatment liquid containing a reducing agent is applied to hair, the method of shaping said hair into straight hair is described by compressing, while warming hair. Further, Patent Document 2 discloses that it is preferable to use a jelly-formed perm treatment liquid so that the perm treatment liquid does not adhere to the scalp or hair root.

By the way, the patent document describes that the hair shaft, which is a portion exposed to the outside of the hair follicle, is formed into a straight hair by conventional perm treatment methods. However, since hair newly grown after the treatment still becomes curly hair, it is necessary to regularly perform perm treatment on the hair in order to maintain the straight hair state of the hair.

[Patent Document 1]

Unexamined Japanese Patent Publication (KOKAI) No. 09-132,515

[Patent Document 2]

Korean Patent Publication No. 00-064,298 of PCT International Publication for Patent Application

Problems to be Solved by the Invention

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a method for treating perm that can sustain a straight hair condition of hair for a long time.

(Means to solve the task)

In the perm treatment method of the present invention, a permeation step of infiltrating the perm treatment solution under the hair root by attaching a perm treatment solution containing thioglycolic acid below a position close to the hair root of the hair from which oil and the like have been removed by shampoo and hair dressing. ; And a shaping step of stretching the hair with a predetermined force while shaping the hair with the perm treatment solution attached thereto at a predetermined temperature and shaping it into a straight hair.

In the perm treatment method of the present invention, between the penetration step and the shaping step, a treatment powder for adsorbing or absorbing the perm treatment liquid is sprayed on at least a portion of the hair to transfer the perm treatment liquid from the hair to the treatment powder. It is preferable to provide the process liquid absorption process which shifts and suspends the said shaping | molding.

In the perm treatment method of the present invention, it is preferable that the concentration of the thioglycolic acid contained in the perm treatment liquid may be 7% by weight or less of the entire perm treatment liquid.

In addition, the perm treatment liquid further comprises cysteine, and the sum of the concentration of the chioglycolic acid and the concentration of the cysteine may be 7% by weight of the entire perm treatment liquid.

In the case of performing the treatment liquid absorption step, the treatment powder may preferably be at least one of a hydrophilic organic powder and a hydrophilic inorganic powder.

Preferably, the infiltration process can be performed while warming the hair.

It is preferable that the said penetration process can leave the said hair in the state to which the said perm treatment liquid adhered for 20 minutes or more.

It is preferable that the said penetration process can vibrate the said hair in the state to which the said perm treatment liquid adhered by the ultrasonic vibration means.

The shaping step is preferably capable of vibrating the hair in the state in which the perm treatment liquid is attached or the hair sprayed with the treatment powder by ultrasonic vibration means.

The ultrasonic vibrating means includes an ultrasonic vibrator and an ultrasonic absorbing plate disposed to face the ultrasonic vibrator at variable intervals; Preferably, the vibration may be performed while maintaining the hair in the state in which the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic absorbing plate.

The ultrasonic vibrating means includes an ultrasonic reflector disposed so as to face an interval between the ultrasonic vibrator and the ultrasonic vibrator at an integral multiple of 1/2 of the wavelength of the ultrasonic wave generated by the ultrasonic vibrator; Preferably, the vibration may be performed while maintaining the hair in the state in which the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic reflector.

It is preferable that the said predetermined temperature in the said shaping process can be 100 degreeC or more.

According to the perm treatment method of the present invention, the hair newly grown after the perm treatment is in a straight hair state. The reason is not yet clear, but it is thought to be due to the following action. 1 is a cross-sectional view for schematically illustrating the hair root portion of the curly hair.

Among the hairs (1), the hair root (3) is located in the hair follicle (2), a part of which consists of the scalp (4) is completed. In curly hair, the hair root 3 is known to be curved in an arc shape. When the perm treatment liquid is attached to a portion of the hair 1 close to the hair root 3, the perm treatment liquid penetrates into the hair root 3 in the hair follicle 2. When the perm treatment liquid penetrates into the hair root 3, since the glycolic acid contained in the perm treatment liquid acts on the hair root 3, the elasticity of the hair root 3 becomes small, and the hair root 3 is additionally added. Plasticity is provided.

In this state, as shown in FIG. 2, when the hair 1 is stretched while being warmed, the hair 1 is shaped into a straight hair shape as shown in FIG. 3. The hair roots 3 are also shaped in a straight line by shaping the hair 1 into a straight hair shape.

Here, among the hair roots 3, the hair base end 5 is a part in contact with the dermal papilla 6, which is the bottom of the hair follicle 2, and the hair 1 grows due to the fact that cell division occurs here. Is caused. Therefore, since the mosquito end 5 receives a predetermined action due to the fact that the hair root 3 is shaped in a straight line shape, the hair 1 growing after the perm treatment is considered to have a straight hair shape.

Here, in the conventional perm treatment method, the perm treatment liquid is attached to the parts separated from the hair root in the hair alone. This is because in the perm treatment method for straightening the hair, external force such as pulling and compression is applied to the hair, so that the perm treatment liquid adheres to the part close to the hair root between the hairs so that the elasticity of the part becomes smaller. This is due to the fact that there is a risk of breaking during tensioning.

Therefore, in the conventional perm treatment method, the perm treatment liquid does not penetrate to the root of the hair, so that hair newly grown after the perm treatment is still kept as curly hair. In the method for perm treatment of the present invention, due to the fact that the perm treatment liquid penetrates to the hair roots and the hair is stretched while warming the hair, it is possible to make the hair growing after the perm treatment have a straight hair shape as described above.

In the above-described perm treatment method of the present invention, between the penetration step and the shaping step, a treatment powder for adsorbing or absorbing the perm treatment liquid is sprayed on at least a portion of the hair to transfer the perm treatment liquid from the hair to the treatment powder. It is preferable to provide the process liquid absorption process which shifts and suspends the said shaping | molding. In the case of performing a shaping step on the hair after such a treatment liquid absorption step, first, a treatment powder for adsorbing or absorbing the perm treatment liquid is heated. And, due to the fact that it is warmed, the rate of reduction of cystine is increased in the part of the hair to which the treated powder is in contact, and thus hair shaping resumes. Moreover, the shaping is resumed due to the fact that the treatment powder is warmed and the perm treatment liquid exits the treatment powder and is transferred back to the hair.

Here, it is known that curly hair generally bends large in the wet state, and that the curvature becomes smaller in the dry state. Therefore, in wet hair, it is very difficult to identify the stereotyped state due to the apparent difference between the part where the form is formed and the curvature disappears or becomes smaller and the part where the form is insufficient to keep the hair still curved or made small. it's difficult. However, when the treatment liquid absorption step is carried out between the penetration process and the shaping process, the perm treatment liquid adhering to the hair is adsorbed or absorbed into the treatment powder, and the hair becomes almost dry. As a result, since it is possible to visually and easily determine between the part which has sufficient shaping and the part with insufficient shaping between hairs, there is an advantage in that it is possible to shape | shape a hair more reliably to a straight hair shape. Due to the fact that the hair is reliably shaped into a straight hair shape, the hair root is also reliably straightened, so that hair growing after the perm treatment is more reliably straight hair.

Furthermore, in the case where the shaping process is carried out on the hair after the above-described treatment liquid absorption step, the treatment powder for adsorbing or absorbing the perm treatment liquid is first warmed up, but even when the heating temperature exceeds 200 ° C, water vapor explodes (blow). up does not occur. When the shaping process is performed without the treatment liquid absorption process, the treatment liquid attached to the hair causes a kind of steam expansion, which is dangerous.

In the perm treatment method of the present invention, when the perm treatment liquid having a concentration of thioglycolic acid is 7% by weight or less of the entire perm treatment liquid, there is an advantage that the hair is not broken during shaping.

Furthermore, when cysteine is further mixed with the perm treatment solution so that the sum of the concentrations of thioglycolic acid and the concentration of cysteine is 7% by weight of the entire perm treatment liquid, hair breakage during shaping is less likely. There is an advantage.

The treatment powder used in the treatment liquid absorption step may be at least one of hydrophilic organic powder and hydrophilic inorganic powder. Chioglycolic acid (C ₂ H ₄ O ₂ S) included in the perm treatment liquid is a water-soluble liquid called mercaptoacetic acid or mercaptoethanoic acid, and the perm treatment liquid is thioglycolic acid. It is an aqueous solution soluble in water. As a result, the perm treatment liquid is very well adsorbed or absorbed by the hydrophilic treatment powder.

When the permeation step is carried out while the hair is warmed, the perm treatment liquid easily penetrates into the hair root, whereby the hair growing after the perm treatment can be more surely straightened.

When the hair in the state where the perm treatment liquid is attached to the permeation step is left for 20 minutes or more, the perm treatment liquid is more surely penetrated into the hair, so that hair growing after the perm treatment is more reliably straight hair. Can be shaped.

If the perm treatment liquid is ultrasonically vibrated with the perm treatment liquid, the perm treatment liquid deeply penetrates into the hair follicles and penetrates into the hair papilla of the hair, so that hair growing after the perm treatment can be more surely straight hair-shaped. have.

In the shaping step, when the hair with the perm treatment liquid attached (without the perm liquid absorption step) or the hair sprayed with the treatment powder (by the perm liquid absorption step) is vibrated by the ultrasonic vibration means, the perm treatment liquid Since it penetrates deep into the hair follicle and penetrates into the hair papilla of the hair, hair growing after the perm treatment can be more surely straightened.

Furthermore, when the hair is ultrasonically vibrated while the hair in the state where the perm treatment liquid is attached or the hair sprayed with the treatment powder is held between the ultrasonic vibrator and the absorber absorbing plate in the permeation step or the shaping step, Since the ultrasonic wave generated from the vibrator is absorbed by the absorber plate, there is no offset action by the reflected wave, and thus the ultrasonic wave effectively acts on the hair.

Furthermore, in the penetration process or the shaping process, 1/2 of the wavelength of the ultrasonic wave which causes the ultrasonic vibrator to generate the spacing between the ultrasonic vibrator and the ultrasonic vibrator for the hair with the perm treatment liquid or the treated powder sprayed thereon. In the case of ultrasonically vibrating the hair while maintaining between ultrasonic reflectors disposed to face each other by an integer multiple of, since the ultrasonic waves generated from the ultrasonic vibrator and the ultrasonic waves reflected from the reflecting plate interfere with each other and reinforce each other, the treatment liquid is introduced into the hair. The penetrating action is increased.

Furthermore, when the heating temperature is adopted at 100 ° C. or higher in the shaping step, the hair growing after the perm treatment becomes more surely straight hair. Note that the "heating temperature" described herein refers to the temperature of the means itself for warming the hair. For example, when the hair is heated with a hair iron, an example of adopting a portion of the hair iron which comes into contact with the hair at 100 ° C. or higher is “adopting the heating temperature of the hair at 100 ° C. or higher”. It is called. The higher the heating temperature, the greater the shaping action, so it is better to adopt it to be approximately 220 ° C. When the shaping process is performed while the hair is warmed without the treatment liquid absorbing process, the treatment liquid attached to the hair causes a kind of steam expansion and becomes dangerous. However, due to the fact that the treatment liquid absorption step is carried out even when the heating temperature exceeds 200 ° C., the treated powder absorbs the perm treatment liquid and changes it to a dry state, so that the water vapor does not explode at all.

Performing the shaping process in two times; That is, it is also preferable to perform a pre-forming process (first shaping process) between the permeation process and the treatment liquid absorption process, and to carry out the post-forming process (second shaping process) after the treatment liquid absorption process. Hair liver, a part that is not completely shaped by the pre-shaping process is detected; Due to the fact that the part is once again shaped by the post-shaping process, the hair is more reliably straightened. In addition, the hair grown after the perm treatment is also more surely straight hair.

1 is a cross-sectional view schematically illustrating the hair root portion of the curly hair.

2 is a cross-sectional view schematically illustrating the appearance of performing a shaping process on the curly hair.

3 is a cross-sectional view schematically illustrating the hair after the perm treatment by the perm treatment method of the present invention.

4 is a photograph showing hair that has passed 4 months after the method of treating the perm of the comparative example.

Figure 5 is an enlarged photograph of the main part showing the hair 4 months after the method of the perm treatment of the comparative example.

FIG. 6 is a photograph showing hair which has elapsed 4 months after the method of treating a perm in the embodiment.

Figure 7 is an enlarged photograph of the main part showing the hair 4 months after the method of the perm treatment of the embodiment.

8 is a side view of the ultrasonic vibration means.

9 is a cross-sectional view taken along the line A-A of FIG.

In the perm treatment method of the present invention, the perm treatment liquid is capable of adopting known ones containing thioglycolic acid. The higher the concentration of thioglycolic acid included in the perm treatment solution, the shorter the time required for perm treatment. Moreover, the lower the concentration of the thioglycolic acid, there is an advantage that less hair breaks during shaping.

The concentration of thioglycolic acid contained in the perm treatment liquid may be 7 wt% or less with respect to the perm treatment liquid. This is because the hair is cut off during shaping as described above. It is noted that when the concentration of thioglycolic acid in the perm treatment liquid exceeds 7% by weight, the hair easily breaks during shaping, but in this case, hair grown after the perm treatment becomes straight hair. Therefore, the concentration of thioglycolic acid in the perm treatment liquid may exceed 7% by weight.

The concentration of thioglycolic acid in the perm treatment solution may be 4.5 wt% or more and 7 wt% or less. The reason why it is adopted at 4.5% by weight or more is that as the concentration of thioglycolic acid is higher, shaping can be more surely performed in a shorter time. Even when the concentration of thioglycolic acid is less than 4.5% by weight, it is desirable to shape the hair in a straight hair shape by increasing the amount of perm treatment liquid attached to the hair or by extending the time required for the penetration process and the shaping process. Note that it is possible. Also in this case, hair grown after the perm treatment step is straight hair.

In the perm treatment method of the present invention, cysteine can be further mixed with the perm treatment liquid. Cysteine acts as a reducing agent to reduce cystine by producing hydrogen ions similar to thioglycolic acid. Since the reducing action of cystine by cysteine is weaker than that of thioglycolic acid, by using a combination of thioglycolic acid and cysteine, it is possible to obtain an effect of reducing hair break easily during shaping. In this case, the sum of the concentration of thioglycolic acid and the concentration of cysteine may preferably be 7% by weight of the total perm treatment liquid.

Moreover, also in all the said cases, it is preferable that the pH of a perm treatment liquid exists in the range of 4.5-9.6, and it can be about 8-9 approximately. Although thioglycolic acid is acidic, it is also possible to mix the well-known alkaline agent represented by ammonia or monoethanolamine with the said perm treatment liquid, and to set the pH of the said perm treatment liquid to the said range. Note that, in particular, when a salt of thioglycolic acid such as an ammonium salt of thioglycolic acid is adopted, the basic agent cannot be mixed in particular.

In the penetration process, the portion of the hair to which the perm treatment liquid is attached is more preferably located closer to the hair root.

For example, when the perm treatment liquid is attached to a position proximate to the hair root to the extent that the perm treatment liquid adheres to the scalp, the perm treatment liquid is sent directly into the hair follicle or through the scalp or hair shaft to penetrate the hair root. .

Furthermore, the perm treatment liquid moves in the direction of the hair roots due to capillary phenomenon between the hairs adjacent to each other, so that the perm treatment liquid enters the inside of the hair follicle even when the perm treatment liquid is attached to the hair root which is the part coming out of the hair follicles alone. Penetrate into the hair roots.

In addition, since the hair has a tubular shape depending on the amount of the perm treatment liquid attached to the hair or the attachment portion, the perm treatment liquid adhered to the surface of the hair shaft penetrates into the inside of the hair to reach the hair root.

Also in all the above cases, it is preferable to attach the perm treatment liquid to the position where the part near the hair follicle is wetted by the perm treatment liquid.

However, the infiltration process is preferably carried out while the hair is heated, and the temperature at this moment may be 30 to 45 ° C. Since the reaction rate at which cystine is reduced by the thioglycolic acid depends on the temperature, there may occur cases where the hair cannot be uniformly shaped when the temperature imbalance is large depending on the parts of the hair. However, when the permeation process is performed while the hair is heated, the temperature imbalance is reduced and the cystine of the hair is reduced without imbalance, so that the hair can be uniformly shaped during the shaping process. Moreover, in the penetration process, it is also possible to reduce the temperature imbalance even further by covering the hair with a cap or wrapping material or the like.

As described above, it is noted that the infiltration process preferably leaves the hair after the perm treatment liquid adheres to the hair, and it is preferable to leave it for 20 minutes or more. This is because, over time, the perm treatment liquid penetrates the hair, thereby more reliably reducing the cystine in the hair.

The penetration process and / or shaping process may preferably be carried out while vibrating using ultrasonic vibration means, but in this case the frequency of the ultrasonic waves is preferably in the range of 20 to 100 kHz. When the power of the ultrasonic wave becomes higher, the perm treatment liquid penetrates into the hair roots even with a shorter vibration time; If the power of the ultrasonic wave is lower, it is better to increase the vibration time. For example, it is possible to use ultrasonic vibration means having a frequency of 20 kHz and a power of 10-20 W.

If the frequency of the ultrasonic waves is f and the sound velocity is v, the ultrasonic waves reflected from the vibrator and the ultrasonic waves reflected from the reflector are reinforced when the distance L between the vibrator and the reflector is as follows:

L = n (v / f)

Where n is an integer and may be 1, 2, 3, ... For example, when f = 20 kHz and n = 1, since v = 300 m / sec, L = 7.5 mm. In other words, when vibrating with the 20-kHz-frequency-ultrasound vibrating means, it is possible to hold the hair between the vibrator and the reflector so that the distance between the vibrator and the reflector is 7.5 mm so that the ultrasonic waves can be strongly applied to the hair. .

In the said shaping | molding process, it is preferable that the temperature for heating the hair of the state in which the perm treatment liquid adhered without a process liquid absorption process exists in the range of 160-180 degreeC. At this time, since the perm treatment liquid adheres to the hair, the temperature actually acting on the hair becomes a temperature below the warming temperature, and thus does not cause so-called steam explosion. If the hair-heating temperature is in the above range, it is possible to sufficiently shape the hair into a straight hair shape in a relatively short time. In the said shaping | molding process, when heating after a process liquid absorption process, it is preferable to exist in the range of 200-250 degreeC. Since the treatment liquid is absorbed into the treatment powder and the hair becomes dry, it does not cause a water vapor explosion. If the hair-heating temperature is in the above range, it is possible to sufficiently shape the hair into a straight hair shape in a relatively short time.

In the shaping process, the higher the force for pulling the hair is more preferable, but, for example, when the tensile time is longer, the force for pulling the hair can be relatively smaller. Here, the force for pulling the hair may be 0.5 kg / cm ^{2 or} more, and preferably 0.8 kg / cm ^{2 or} more. And it is good that it can be 1.0kg / cm <^{2> or} more. Note that the force to stretch the hair described herein is determined to the extent that the scalp is stretched. For example, a case in which the scalp is stretched to the same extent that a hair grown in 10 cm square weighs 10 kg is referred to as "hair is stretched to 1 kg / cm ² ".

In the case of carrying out the treatment liquid absorption step between the permeation step and the shaping step, the treatment powder to be sprayed on the hair is preferably one or more of the hydrophilic organic powder and the hydrophilic inorganic powder as described above. Among them, in the hydrophilic organic powder, it is preferable that sugars, alcohols, carboxylic acids, esters and the like having hydrophilic groups such as hydroxyl groups, carboxyl groups and ester groups can be used. In these organic powders, those which are solid at room temperature can be used. For hydrophilic inorganic powders, it is possible to quote various metallic oxides. Among them, in particular, it is preferable that viscous minerals, silica, alumina and the like having a large specific surface area can be used.

In the perm treatment method of the present invention, it is possible to reoxidize the reduced cystine by acting an oxidizing agent on the hair after the shaping process depending on the composition of the perm treatment liquid or the like. Note that in the case of selecting a mono-bath type using oxygen in the air as the oxidant, it is preferable that the oxidant does not act separately on the perm treatment liquid.

Hereinafter, the perm treatment method of the present invention will be described with reference to embodiments.

First, the perm treatment performed by the perm treatment method of the comparative example with respect to the hair of the subject with curly hair will be described. Note that the subject's hair was partially mixed with white hair.

(Comparative Example)

(Cystine reduction process)

The perm treatment liquid was attached to the hair from which oil and the like were removed by shampoo and hair dressing. The perm treatment liquid is 4.0% by weight of the glycolic acid, 1.5% by weight of cysteine hydrochloride, 1.5% by weight of monoethanolamine, 1.5% by weight of ammonia, 1.5% by weight of ketanol and 1.0 By weight of lauryl trimethylammonium chloride.

At this time, the perm treatment liquid was attached to the tip side portions only by 1 cm or more over the scalp among the hairs, so as not to adhere to the hair root. The whole hair with the perm treatment solution was covered with a cap made of resin and left for 20 minutes while warming with a lamp set at 40 ° C.

(Pre-Forming Process)

After the end of the cystine reduction step, the hair with the perm treatment solution attached was stretched by the operator's hand while warming using a hair iron. The hair iron used here is the part that comes into contact with the hair heated to 80 ° C.

First, the hair was blocked for grasp. The block was held with a hair iron and, in this state, the hair iron was tensioned while sliding from the position near the scalp to the hair-end side. The end of the sliding of the hair iron toward the hair-end side from the position near the scalp was considered as a single tension. One tension was performed for about 5 seconds, and the tension was performed three times in total. At this time, the tensile force of the hair was approximately 0.5kg / cm ² . With respect to the hair of the other blocks, the tension was similarly performed three times each to form the entire hair. Note that the hair of the subject subjected to this comparative example was approximately 14 cm.

(Process liquid absorption process)

After the completion of the pre-shaping process, the treated powder made of CMC (carboxymethylcellulose) was sprayed onto the hair with the perm treatment solution attached to the extent that the surface of the hair was dried. By this process, the perm treatment liquid was absorbed into the treated powder, whereby the shaping was suspended.

(Post-Formation Process)

After the treatment liquid absorption step, the hair condition was judged visually. Portions of hair that were not sufficiently shaped to form straight hair were selected and shaping of the hair was carried out in the same manner as the pre-shaping process described above. In this post-shaping process, one block of hair was tensioned twice each. By this post-shaping process, hairs that were not completely shaved in the pre-shaping process were shaped, and the entire hair was uniformly straightened.

(Oxidation process)

After the post-shaping process, an oxidant with 10% by weight sodium bromate relative to the total oxidant was applied to the hair. By this oxidation process, since cystine oxidized by the thioglycolic acid in the above-described infiltration process is reoxidized, the hair's fixed state is fixed in the shape of a straight hair.

(Post-treatment process)

After completion of the infiltration process to the oxidation process, the hair was shampooed to remove the perm treatment liquid, the treatment powder and the oxidizing agent. Then, the hair was dried with a hair dryer.

According to the perm treatment, the hair of the subject was shaped into straight hair. 4 months after the perm treatment of the comparative example, the hair of the subject was collected. And the state of the hair newly grown after the perm treatment of the comparative example was visually determined. The photograph which shows the hair of the subject after 4 months passed after the perm treatment of the said comparative example is illustrated in FIG. Moreover, an enlarged photograph of the main part of the hair is illustrated in FIG. 5. As illustrated in FIG. 4, between the collected hairs 10, the portion 11 near the hair root was curly hair, and the portion 12 far from the hair root was straight hair. The straight part 12 is a part where the perm treatment of the comparative example was performed, and the curly part 11 is a part that is newly grown after the perm treatment of the comparative example. From these results, it can be seen that according to the method of perm of the comparative example, that is, according to the conventional method of perm, the hair shaft portion was shaped into straight hair, but the newly grown portion still remained curly hair. Note that the hair has been colorized just before collection.

(First embodiment)

After 4 months after the perm treatment of the comparative example described above, the perm treatment by the perm treatment method of the first example was performed on the right half of the hair of the same subject.

(Infiltration process)

The perm treatment solution was attached to the hair from which oil was removed by shampoo and hair dressing. The said perm treatment liquid is the same as the perm treatment liquid used by the comparative example.

At this time, the perm treatment liquid was attached to the entire hair so that the scalp was wet. The hair with the perm treatment solution was covered with a cap made of resin and left for 20 minutes while warming with a lamp set at 40 ° C.

(Process liquid absorption process)

After the permeation step, the treated powder made of CMC (carboxymethylcellulose) was sprayed onto the hair with the perm treatment solution attached to the extent that the surface of the hair was dried. By this process, the perm treatment liquid was absorbed into the treated powder, whereby the shaping was suspended.

(Forming process)

After the perm solution absorption process, the hair with the CMC adsorbed by the perm treatment solution was stretched by the operator's hand while warming using a hair iron. The hair iron used here is the part that comes into contact with the hair heated to 160 ° C.

First, the hair was blocked for crushing. The block was held with a hair iron and, in this state, the hair iron was tensioned while sliding from a position near the scalp to the hair-end side. The end of the sliding of the hair iron toward the hair-end side from the position near the scalp was considered as a single tension. One tension was performed for about 5 seconds, and the tension was performed four times in total. At this time, the tensile force of the hair was approximately 1 kg / cm ² . With respect to the hair of the other blocks, the tension was similarly performed four times each to form the whole hair. It is similarly noted that the hair of the subject subjected to this comparative example was approximately 18 cm.

(Oxidation process)

After the shaping step, the same oxidant as the comparative example was applied to the hair to fix the shaping state of the hair into a straight hair shape.

(Post-treatment process)

After completion of the infiltration process to the oxidation process, the hair was shampooed to remove the perm treatment liquid, the treatment powder and the oxidizing agent. Then, the hair was dried with a hair dryer.

According to the method of perm treatment, the subject's hair was straightened, and the parts straightened were hair-stained. Four months after the perm treatment of this example, the hair of the subject was collected. And the state of the hair which grew newly after the perm treatment of this Example was visually determined. The photograph which shows the hair of the subject after 4 months passed after the perm treatment of this Example is illustrated in FIG. Moreover, an enlarged photograph of the main part of the hair is illustrated in FIG. 7. As illustrated in FIG. 6, approximately 80% of the hair 20 collected, including the newly grown parts, is in the shape of a straight hair. Fig. 7 illustrates the portions grown after the perm treatment of this embodiment as white portions 21, but it can be seen that they have a straight hair shape. From these results, it can be seen that in the method for perm treatment of the present embodiment, the hair root portion is shaped into straight hair, and the portion newly grown afterwards is also straight hair.

Second Embodiment

Four months after the perm treatment of the comparative example described above, the perm treatment by the perm treatment method of the second embodiment was performed on the left half of the hair of the same subject. Since this embodiment is the same as the first embodiment except for the infiltration process and the shaping process, only the infiltration process and the shaping process will be described.

(Infiltration process)

The perm treatment solution was attached to the hair from which oil was removed by shampoo and hair dressing. The said perm treatment liquid is the same as the perm treatment liquid used by the comparative example.

At this time, the perm treatment liquid was attached to the entire hair so that the scalp was wet. The hair with the perm treatment solution was vibrated using the ultrasonic vibration means illustrated in FIGS. 8 and 9. The vibrating means has arms 7 and 8 which can rotate about the hinge axis 9 with respect to the propulsive force of the spring 85, and an ultrasonic vibrator 71 is attached to the arm 7, one side thereof. Facing this arm (8). Moreover, the reflecting plate 81 is attached to one side of the arm 8 facing the arm 7, and the removable stopper 84 is attached to the tip. 72 and 82 are heaters, 30 is hair, 73 is grip of arm 7 and 83 is grip of arm 8. From the ultrasonic vibrator 71, ultrasonic waves with a frequency of 20 kHz and a power of 16 W are applied. The height of the stopper 83 is set so that the space between the arms 7 and 8 becomes 7.5 mm in a state where the arm 7 comes into contact with the stopper 83 (state of FIG. 8). With respect to the grabbing, the blocked hair 30 is pinched with arms 7 and 8, rotated about the hinge axis 9 so that the arm 7 comes into contact with the stopper 83, and the heater 72. , 82) was set to 40 ° C. and vibrated for 30 seconds. For the hair of the other blocks, it was similarly vibrated.

Note that the ultrasonic vibration means is not limited to the above detailed description (Figs. 8 and 9), and 81 may be adopted as the ultrasonic vibrator, for example. Alternatively, 81 may be adopted as the ultrasonic absorber plate.

(Forming process)

After the perm solution absorption process, the hair with the CMC adsorbing the perm treatment solution was stretched by the operator's hand while warming and vibrating using the ultrasonic vibration means of FIGS. 8 and 9. In this case, it is noted that the vibrating means has the stopper 83 removed, thereby keeping the hair 30 strong. Moreover, heaters 72 and 82 were set to 220 ° C.

First, the hair was blocked for crushing. The block was held by vibrating means, and in this state, the vibrating means were tensioned while sliding from the position near the scalp to the hair-end side. Ending of the sliding of the vibrating means toward the hair-end side from the position near the scalp was regarded as a single tension. One tension was performed for about 5 seconds, and the tension was performed four times in total. At this time, the tensile force of the hair was approximately 1 kg / cm ² . With respect to the hair of the other blocks, the tension was similarly performed four times each to form the whole hair. It is similarly noted that the hair of the subject subjected to this comparative example was approximately 18 cm.

According to the perm treatment method of this embodiment, the subject's hair was straightened and the parts straightened were hair-stained. Four months after the perm treatment of this example, the hair of the subject was collected. And the state of the hair which grew newly after the perm treatment of this Example was visually determined. 95-100% of the hair collected, including the newly grown parts, is in the shape of a straight hair. From these results, in the perm treatment method of this embodiment, it was found that the hair root portion was shaped into a straight hair, and additionally, the newly grown portion was also straight hair.

Claims (15)

In the perm treatment method, A permeation process of adhering the perm treatment solution containing thioglycolic acid below the position close to the hair root of the hair from which oil and the like have been removed by shampoo and hair dressing; And And a permation step of stretching the hair with a force of 0.5 kg / cm 2 to 1 kg / cm 2 while shaping the hair with the perm treatment solution attached thereto at a predetermined temperature, thereby shaping it into a straight hair. Treatment method. The method of claim 1, Between the permeation process and the shaping process, a process powder for adsorbing or absorbing the perm treatment liquid is sprayed on at least a portion of the hair to transfer the perm treatment liquid from the hair to the treated powder to suspend the shaping. A perm treatment method comprising a treatment liquid absorption step. The method according to claim 1 or 2, The concentration of the thioglycolic acid contained in the perm treatment liquid is greater than 0% by weight of the entire perm treatment liquid, characterized in that less than 7% by weight. The method according to claim 1 or 2, The perm treatment solution further comprises cysteine, wherein the sum of the concentration of the thioglycolic acid and the concentration of the cysteine is 7% by weight of the entire perm treatment solution. The method of claim 2, The treatment powder is a perm treatment method, characterized in that at least one of a hydrophilic organic powder and a hydrophilic inorganic powder. The method according to claim 1 or 2, The permeation process is a perm treatment method comprising heating the hair in a state where the perm treatment liquid is attached. The method according to claim 1 or 2, The permeation process is a perm treatment method comprising leaving the hair in the state to which the perm treatment liquid is attached at least 20 minutes. The method according to claim 1 or 2, The permeation process is a perm treatment method comprising vibrating the hair in the state in which the perm treatment liquid is attached by ultrasonic vibration means. The method according to claim 1 or 2, The shaping step includes a perm treatment method comprising vibrating the hair with the perm treatment liquid attached thereto or the hair sprayed with the treatment powder with ultrasonic vibration means. The method of claim 9, The ultrasonic vibrating means includes an ultrasonic vibrator and an ultrasonic absorbing plate disposed to face the ultrasonic vibrator at variable intervals; The perm treatment method characterized in that the vibration is performed while maintaining the hair in the state where the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic absorber. The method of claim 9, The ultrasonic vibrating means includes an ultrasonic reflector disposed so as to face an interval between the ultrasonic vibrator and the ultrasonic vibrator at an integral multiple of 1/2 of the wavelength of the ultrasonic wave generated by the ultrasonic vibrator; And the vibration is performed while maintaining the hair in the state where the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic reflector. The method according to claim 1 or 2, The said predetermined temperature in the said shaping process is 100 degreeC or more and 250 degrees C or less, The perm processing method characterized by the above-mentioned. delete The method of claim 8, The ultrasonic vibrating means includes an ultrasonic vibrator and an ultrasonic absorbing plate disposed to face the ultrasonic vibrator at variable intervals; The perm treatment method characterized in that the vibration is performed while maintaining the hair in the state where the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic absorber. The method of claim 8, The ultrasonic vibrating means includes an ultrasonic reflector disposed so as to face an interval between the ultrasonic vibrator and the ultrasonic vibrator at an integral multiple of 1/2 of the wavelength of the ultrasonic wave generated by the ultrasonic vibrator; And the vibration is performed while maintaining the hair in the state where the perm treatment liquid is attached or the hair sprayed with the treatment powder between the ultrasonic vibrator and the ultrasonic reflector.

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