JP2009120543A - Operation for correcting frizzy hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the damage of hair while keeping good straight state even by repeating a frizzy hair correcting operation and keep good feeling of the hair. <P>SOLUTION: The frizzy hair correcting operation includes a reducing and softening step to apply a frizzy hair correcting first agent containing a reducing agent to the hair and reduce and soften the frizzy hair and an oxidizing and fixing step to apply a frizzy hair correcting second agent containing an oxidizing agent to the hair and perform the oxidation fixing of the hair in a corrected state, wherein the operation is further provided, before the reducing and softening step, with (A) a step to apply or spray water to the hair or immerse the hair in water and (B) a step to impregnate the water into the hair by applying a tension to the wet hair. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a treatment method for correcting curly hair.

At present, beauty techniques (generally, straight perm) for straightening curly hair and setting it straight to permanent are widely used. As a typical example of this treatment method, there is a cold 2-bath type curly hair straightening method using a high-temperature hair-styling iron (hereinafter referred to as an iron). This method is performed by the following steps.
1. Diagnose the hair and select appropriate drugs (one and two) that match the hair quality, amount, and damage.
2. A pretreatment agent (such as a treatment agent) for protecting the hair from a drug (particularly, one agent containing a reducing agent) is applied.
3. One agent containing an alkaline agent and a reducing agent is applied to reduce and soften the hair.
4). Check the reduction softening state of the hair by wrapping or pulling the hair (softening check).
5). After confirming the reduced softening state, rinse the hair with water and wash out 1 agent.
6). Dry the hair.
7). Apply heat with an iron across the hair. The set temperature of the iron at this time is generally 120 ° C to 180 ° C.
8). Two agents containing an oxidizing agent are applied to the hair and oxidized and fixed in a straight state.
9. Wash the hair carefully with water so that no two agents remain on the hair or scalp.
10. Finish with a hair protecting agent such as a hair post-treatment agent or hair conditioner.

  The hair straightened in this way is maintained in its permanent state. On the other hand, since the newly formed part that grows thereafter is curly, it is necessary to repeat the curly straightening treatment every several months. Since the hair straightening treatment alters the hair tissue by the action of the permanent agent, the hair is damaged each time the treatment is repeated. Such damaged hair is easily destroyed by daily care such as shampooing and blowing, and becomes gradually hardened over time. In particular, when an iron with a strong straightening effect is used, damage due to heat is also added, so that damage to the hair becomes greater. Since the hair thus hardened is highly likely to be damaged to the inside of the hair, further hair straightening treatment results in a state where the hair is strongly curled (called halation hair). Since hair in such a state cannot be recovered, it must be cut and removed.

  Therefore, in order to protect hair from permanent agents (especially the reducing action by the first agent) and heat from irons, a pretreatment agent such as a keratin hydrolyzate or a hair conditioner has conventionally been used before hair straightening treatment. A pretreatment is applied to the hair. The following Patent Documents 1 and 2 are useful as a technique for protecting hair by such pretreatment and a technique for correcting curly hair without using an iron that easily damages the hair.

JP 2000-256147 A JP 2006-16920 A

  However, even when the above-described pretreatment agent is used, it is very difficult to maintain good hair quality while correcting curly hair in repeated hair straightening treatments. For example, if a strong pretreatment agent is used to protect the hair or if it is applied in a large amount, the reducing power of one agent is greatly reduced, and curly hair cannot be corrected to a beautiful straight state.

  Further, when the hair subjected to the curly hair correction treatment is further subjected to other chemical treatment such as hair coloring, the hair is damaged in the longitudinal direction (length direction). It is almost impossible to correct such a complexly altered hair into a uniform straight state from the root to the hair tip.

  The present invention has been made in order to solve the above-described problems. Even when the hair straightening treatment is repeated, hair damage can be reduced while maintaining a good straight state, and a good feel is maintained. The purpose is to provide a treatment method.

  In view of such circumstances, the present inventors have conducted intensive research, and as a result, by applying water to the hair prior to the curly hair correction treatment, the hair is stretched to allow the water to penetrate into the hair. The present invention has been found to be solved, and the present invention has been completed.

  That is, the present invention applies a reduction softening step in which the first hair straightening agent containing a reducing agent is applied to the hair to reduce and soften the curly hair, and a second hair straightening agent containing an oxidizing agent is applied and straightened. In the method for straightening curly hair comprising an oxidative fixing step for oxidatively fixing the hair in a state of being applied, (A) before the reduction softening step, (A) water is applied to the hair, sprayed, or the hair is immersed in water And (B) a step of applying tension to wet hair and allowing moisture to penetrate into the hair.

  From the center, the hair is composed mainly of medulla (medullary medulla) composed mainly of soft proteins and lipids, cortex (furaceous matter) composed mainly of keratin (fibrous protein), and keratin proteins. It has a three-layer structure with a flat cell cuticle. In the medulla (pilus medulla), there are many cavities (voids) called voids, and the applicant of the present invention has adequately applied the first and second agents applied to the surface of the hair around the void. The phenomenon that it did not penetrate was confirmed. Therefore, in the present invention, the air in the void is replaced with water by pulling or swallowing the hair while applying water to the hair in the pretreatment step of the curly hair straightening treatment. The first agent and the second agent can permeate the entire medulla (hair medulla). The water that has penetrated into the void does not easily evaporate not only with subsequent towel drying, but also with warm air from the dryer, heat from the iron, and the like, and thus has a function of maintaining the hair moisturizing effect. Moreover, also when apply | coating a protective agent etc. to hair at a pre-processing process, a protective agent can be osmose | permeated to the medulla inside hair with this water | moisture content. Therefore, even if the amount of the first agent and the second agent is not increased or a strong agent is not used, curly hair can be uniformly corrected to the inside of the hair, and a good finish can be expected. In addition, damage to the hair can be minimized.

  According to the present invention, it is possible to suppress damage to hair without impairing the effect of straightening hair by allowing water to penetrate into the hair in the pretreatment step of straightening treatment. The state can be obtained.

  Hereinafter, a preferred embodiment of the present invention will be described in detail. The method shown below is a method using the most widely used hair-styling iron. This method is roughly divided into a pretreatment step, a reduction softening step using a first agent, a curly hair straightening step using an iron, an oxidation fixing step using a second agent, and a post-treatment step. The present invention is characterized by a pretreatment process, and the other processes are the same as those conventionally performed. Below, each process is demonstrated in detail focusing on a pre-processing process.

(Pretreatment step 1-Preparation of soft water, etc.)
In this step, first, soft water or medium soft water having a hardness of 120 degrees or less, preferably 40 degrees or less is prepared. Since calcium inhibits water from penetrating into the hair, soft water or medium soft water having a low calcium content is used. In Japan, since the hardness of tap water is about 20 to 90 (on average about 60) in many regions, it can be used as it is, but since there are variations in hardness depending on the region, ion exchange resin or the like was used. It is preferable to reduce the hardness by removing or reducing calcium with a soft water generator. In addition, for example, commercially available mineral water (hardness 20 to 40), ion-exchanged water (hardness 0), distilled water (hardness 0), alkaline ionized water, electrolytic water, and the like can be used. Also, hard water such as deep ocean water (hardness 250 or more) can be used.

  The prepared water may contain other components (such as a hair protecting agent) to the extent that the penetrability into the hair is not inhibited. In this case, it is not necessary to be a liquid, and it may be a semi-fluid such as cream or gel, a powder, a mixture / composition with another liquid, or the like. A lotion or the like is preferable in consideration of the penetrability into the hair by stretching and the uniform application to the entire hair. On the other hand, a semi-fluid such as a cream is preferable from the viewpoint of ease of handling and treatment. For example, when a lotion is used, a trigger container can be filled with a water composition diluted with an appropriate amount of water and sprayed onto the hair, so that it can be uniformly applied to the entire hair. When using cream, the practitioner takes an appropriate amount in his hand and applies it to the hair little by little. At this time, since it does not drip from the practitioner's hands and hair, the work is easy and the floor is not soiled. A semi-fluid is also preferred when it is desired to apply water locally to the hair depending on the target site (such as near the face or ears) or the degree of damage to the hair. You may use the liquid of the same or different component, and a semifluid according to an object site | part.

(Pretreatment step 2-water penetration and stretching)
Next, the prepared water is applied or sprayed on the hair, or the hair is immersed in water (hereinafter collectively referred to as “applying” or the like). In this state, water penetrates into the hair while the operator pulls and stretches the wet hair. When such application of water and stretching treatment are repeated about 1 to 5 times, the hair can be stretched by about 0.1 to 15% (returns to the original length when the hand is released). Thereby, the air contained in many voids of the medulla can be replaced with water. Since the water infiltrated into the void functions as a medium for the first agent (water-soluble reducing agent) described later, the first agent can be efficiently and surely infiltrated into the hair. In addition, by allowing the first agent to penetrate evenly into the center of the hair, even if the hair damage is different in the longitudinal direction, the reducing agent can be made to act uniformly, and a good finish (straight state) is expected. it can.

  As is conventionally known, hair is inherently hydrophobic in a state of little damage and easily repels water. For this reason, it is necessary to stretch the vicinity of the root with little damage sufficiently with a strong tension to allow water to penetrate. On the other hand, since the hydrophobicity is weak in the vicinity of the damaged hair end, water can be permeated to such an extent that it can be swallowed without being stretched with a strong tension. Thus, according to the state of hair, a treatment method, strength, etc. are selected and adjusted suitably.

  The practitioner first sprays water on the entire hair, then takes a slice of about 2 cm (a bundle of hair) with a ring comb or the like, puts a small amount of water directly or in a sponge, and takes it in one hand. While applying water to the hair in units of slices, the other hand pulls the hair from the base of the hair toward the tip of the hair. At this stage, the purpose is to infiltrate water, so there is no need to straighten the hair by pulling the hair strongly. On the other hand, if the patient pulls too much, the subject feels pain and may damage the hair, so the strength and number of pulls are adjusted while watching the water penetration. As a guide, if fine bubbles are generated on the surface of the hair, it is proof that the air in the void is replaced with water. In addition, as described above, according to the damage of the hair, from the root to the middle of the hair, the water is stretched strongly so that the water penetrates sufficiently, and conversely, the hair tip part is mixed with water. Keep it.

  The amount of water applied varies depending on the condition of the hair, the amount of hair, etc., but as a guide, it is about 100 ml per one stretching step in the case of medium hair.

  In addition to pulling the hair by hand, pulling the hair with a twin straight brush, applying the tension (applying longitudinal force) and combing with a comb or brush, and putting the hair together A method of squeezing or sticking to a rod-shaped object may be used.

(Pretreatment step 3-warming)
After infiltrating the whole hair, in order to further increase the water penetration, wrap the entire hair and heat it with a roller ball or steamer set at 40 ° C. or higher for about 5 to 15 minutes. . By heating, the molecular movement of water is activated to facilitate penetration into the hair. In addition, after the heating step, the above-described application of water and the hair stretching step are performed again, and these steps are repeated about 1 to 5 times. Thereby, water can penetrate | infiltrate evenly with all the heads. For example, it becomes easier to permeate water into a portion such as a root that is highly hydrophobic and difficult to permeate water.

  Furthermore, after repeating these steps, the penetration of the water-soluble first agent can be promoted by spraying water on the entire hair.

(Pretreatment step 4-Application of pretreatment agent)
In this step, a pretreatment agent for protecting hair is applied in order to suppress hair damage due to the reductive softening action of the first agent, as in the prior art. That is, if the first agent having a reductive softening action is directly applied to hair that is heavily damaged by repeating the curly hair straightening treatment, the hair does not become straight or may cause hair breakage. Further, as will be described later, when straightening with an iron, it is necessary to protect the hair from heat damage. Therefore, before applying the first agent, a hair protecting agent containing a protein hydrolyzate, an oily component, or the like is applied to a particularly damaged hair tip. As the pretreatment agent, an appropriate agent may be used according to the hair diagnosis before the treatment by the beauty practitioner. Further, water mixed with such a hair protecting agent may be applied to the hair.

(Reduction softening process with the first agent)
Like the conventional straightening treatment, the first agent containing an alkaline agent and a reducing agent is combed with a comb of coarse teeth in units of slices, and the first agent is infiltrated into the hair to reduce and soften it. The action softens the hair sufficiently. Here, in the treatment method of this embodiment, the hair straightener which uses thioglycolic acid or its salts as an active ingredient, or the thioglycolic acid type 2 bath type hair straightener using an iron is used suitably. The softened state is checked by a conventionally known method such as wrapping hair around a finger to see how it returns, or bending the hair into a U shape and seeing how it bounces. If it can be confirmed that it is sufficiently softened, the first agent is carefully washed away with water or running water stored in a shampoo ball, as in the prior art. Then, the hair is sufficiently dried with a towel or a dryer. However, when it dries too much, the growth of the habits tends to deteriorate, or moisture does not remain in the hair, and the touch tends to deteriorate. Conversely, if a lot of moisture remains in the hair, the heat of the iron acts on the hair and causes damage. Therefore, it is preferable to dry at about 70 to 90% at this stage.

(Hair straightening process with iron)
In this step, the hair softened by the first agent and straightened to some extent is straightened more firmly and beautifully. Specifically, the hair in slice units is sandwiched with an iron, the hair is tensioned with one hand to adjust the surface, and the iron is operated with the other hand to correct the softened hair. The temperature of the iron at this time is set to about 120 to 180 degrees. While an iron can be expected to have a strong straightening effect, it may damage the hair by heat. Also, the closer the hair ends, the more frequently the hair is straightened and the damage is often accumulated. For this reason, it is preferable to apply tension only to the root portion where the hair is curly or to a portion where correction has not been sufficient in the past treatment. In addition, it is preferable to perform treatment at a temperature near the root of the hair while raising the temperature and lowering the hair tip portion.

(Oxidation fixing process with second agent)
In this step, as in the prior art, combing is performed with a coarse tooth comb while applying a second agent containing an oxidizing agent such as hydrogen peroxide to the hair. When the hair is sufficiently straight, it is left at room temperature for about 3 to 20 minutes in order to oxidize and fix the hair.

(Post-processing process)
Finally, wash away the second agent of hair with pool water or running water, apply treatments as necessary, and dry with a drier or the like to finish.

Examples of the above-described method of the present invention will be described below.
(1) Implementation conditions In the following examples, a hair straightening treatment was performed on 1 g of a 25 cm human hair bundle (curly hair). All the water used was ion-exchanged water 100% (hardness 0). For the first agent and the second agent, Lalute High Position H manufactured by Milbon (the oxidizing agent of the second agent is a hydrogen peroxide type) was used. In the warming step (pretreatment step 3) in the pretreatment step, heating was performed for 10 minutes using a roller ball set at 40 ° C. In the example of using an iron in the correction process, a thermal effect iron FS manufactured by Milbon was used, and the temperature was set to 180 ° C.

Moreover, the hair washing process shown to (ii) of FIG. 1 was performed in the following three processes, and the state which repeated hair washing every day for 1 month was artificially created.
Step 1: Diesceuf Hair Shampoo A manufactured by Milbon is diluted 20 times to produce a shampoo solution.
Step 2: The hair bundle is immersed in a shampoo solution heated to 30 to 35 ° C. in an incubator for 20 minutes.
Step 3: The hair bundle is washed with warm water of about 30 to 35 ° C. and then dried with a dryer.

(2) Examples 1 to 3
In the following Examples 1 to 3 and Comparative Example 1, in the cold two-bath type curly hair straightening method, curly hair was straightened without using an iron.

In Example 1, the method of pulling by hand was used as the stretching method.
In Example 2, a method of combing using a ring comb as the stretching method was used.
In Example 3, the film was stretched by pulling by hand, then heated, and these steps were repeated twice.
In Comparative Example 1, the hair bundle was not stretched.

(3) Examples 4-6
In the following Examples 4 to 6 and Comparative Example 2, in the cold 2-bath type curly hair straightening method, curly hair was straightened using an iron.

In Example 4, the method of pulling by hand was used as the stretching method.
In Example 5, a method of combing using a ring comb as the stretching method was used.
In Example 6, the film was drawn by hand and then heated, and these steps were repeated twice.
In Comparative Example 2, the hair bundle was not stretched.

(Evaluation methods)
About the hair | bristle bundle after the operation by the above-mentioned Example and comparative example, the finishing condition was evaluated by the torsional stress and the sensory evaluation of multiple items by five panelists.

  Here, the torsional stress was measured using a torque sensing type torsion measuring device KES-YN-1 manufactured by Kato Tech. Specifically, the length of the sample hair randomly selected from the treated hair bundle is set to 2 cm, the torsional rotation speed is set to 120 ° C./second, and the torsional rotational speed is set to ± 3 rotations, and the torsional stress of the hair bundle after the treatment is set. Was measured.

  The sensory evaluation items were three items: softness of hair bundle after treatment, gloss, and elongation (hair must be straight). For each of these items, five panelists scored according to the following evaluation points compared to the untreated hair bundles. Then, the scores of all the panelists were totaled and comprehensive evaluation was performed according to the following comprehensive evaluation criteria. In the comprehensive evaluation criteria, ◎ and ○ (15 points or more) pass.

<Evaluation point>
5 points: very good, 4 points: good, 3 points: normal, 2 points: bad, 1 point: very bad.

<Comprehensive evaluation criteria>
Evaluation ◎: Total score is 20 points or more (average 4 points or more)
Evaluation ○: Total score is 15 points or more and less than 20 points Evaluation Δ: Total score is 10 points or more and less than 15 points Evaluation ×: Total score is less than 10 points

(Evaluation results)
The evaluation results of each example and comparative example are shown in FIGS. As can be seen from these evaluation results, in all of Examples 1 to 6, results much better than Comparative Examples 1 and 2 were obtained. In particular, in Examples 4 and 6 in which the hair was drawn by hand and stretched, and corrected using an iron, good results were obtained in all items before and after the hair washes.

(Example 7)
Next, the Example which performed the curly hair correction treatment of the method of this invention with respect to the test subjects 2 (A and B) of curly hair is demonstrated.

  In subject A, the length of the hair is 10 cm below the shoulder and the habit is not strong (normal hair). This test subject A has repeated the color treatment with the oxidized hair dye three times in the past and the hair straightening treatment of the present invention three times. Therefore, the hair tip part is particularly damaged.

  In addition, the subject B has strong curly hair with the length of the hair on the shoulder. In the past, this test subject B repeats the normal hair straightening treatment that does not include the stretching step once and the hair straightening treatment of the present invention twice. Therefore, the hair is generally hardened.

  Here, with respect to the subject A having a large damage at the hair end portion, a Licio Laluche protection 70 manufactured by Milbon was applied as a pretreatment agent. Moreover, about any test subject, the application | coating of water, the extending | stretching process, and the heating process were repeated twice, and the iron was used in the curly hair correction process. Further, after the second agent was washed away with water, as a post-treatment, a treatment (Diess Auf Hair Treatment B + manufactured by Milbon) was applied and finished. Other conditions such as the first agent, the second agent, the type of heating means and iron, and the set temperature are the same as in the above-described embodiment.

(Experimental result)
After the treatment, the panelist visually confirmed that the finish was uniform, and the hair was soft, glossy, and stretched.

FIG. 1 is a diagram showing evaluation results of Examples 1 to 3 and Comparative Example 1 of the present invention. FIG. 2 is a diagram showing evaluation results of Examples 4 to 6 and Comparative Example 2 of the present invention.

Claims (9)

Applying the first hair straightening agent containing a reducing agent to the hair to reduce and soften the curly hair, and applying the second hair straightening agent containing an oxidizing agent to the hair in a straightened state. In the method of straightening curly hair comprising an oxidative fixing step for oxidative fixing,
Before the reduction softening step,
(A) applying water to the hair, spraying, or immersing the hair in water (hereinafter referred to as “applying”);
(B) A method comprising applying tension to wet hair and allowing moisture to penetrate into the hair. The method of claim 1, wherein
A method comprising performing the step (A) and the step (B) simultaneously. The method of claim 1, wherein
further,
(C) a step of heating the hair soaked with water in the step (B),
(D) A method comprising: applying water again to the heated hair. The method of claim 3, wherein
The method characterized by repeating the said (B) process, (C) process, and (D) process in multiple times. The method of claim 1, wherein
In the steps (A) and (B), water is applied in units of slices in which a part of hair is bundled, and tension is applied to allow moisture to penetrate into the hair.
This method further
(E) After the step (B), the method comprises a step of combing water by applying water to the entire hair. The method of claim 1, wherein
further,
(F) After the step (B), a step of applying to the hair a pretreatment agent that prevents or suppresses thermal denaturation of the hair;
(G) A method comprising, after the reduction softening step, pressing the hair reduced and softened by the first agent with a high-temperature hair-styling iron. The method of claim 1, wherein
further,
(G) Before the step (A), soft water or medium soft water from which calcium and magnesium have been removed or reduced from water, ion-exchanged water, or distilled water (hereinafter referred to as “soft water”) is generated, or soft water Including the process of preparing
In the step (A), soft water or the like is applied to the hair. The method of claim 7, wherein
The soft water or the like has a hardness of 120 or less, preferably 40 or less.   Water that is applied to hair in step (A) of the method for straightening curly hair according to claim 1, wherein calcium and magnesium are removed or reduced.

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