JP2013514261A - Method for treating keratin fibers - Google Patents

Abstract

(式中、
Xは、O^-、OH、NH₂、O-OH及びO-COO^-からなる群から選択される基である)
の炭酸イオン源も含有しない、方法に関する。本発明は、更に、前述の方法に使用するための組成物自体及びキットに関する。The present invention is a method for treating keratin fibers comprising:
Applying a composition comprising at least one colorless hydrophobic molecule on keratin fibers;
Next, the step of placing the keratin fibers in the closed space;
And then heating the keratin fiber.
The composition may also be a reducing agent of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
It also relates to a process that does not contain any source of carbonate ions. The invention further relates to the compositions themselves and kits for use in the methods described above.

Description

  The present invention relates to a method for treating keratin fibers (hair, etc.), and a composition and kit used in the method.

  Because there is a lot of physical stress (UV, shampoo, brushing, etc.) and chemical stress (coloring, perm, relaxing, contamination, etc.) that keratin fibers (hair etc.) have to undergo daily Research into the effective repair of damaged keratin fibers has become important in the cosmetic treatment of keratin fibers.

  The repair of damaged keratin fibers is only valuable if you get a realistic sense that you have returned to the original keratin fibers. Furthermore, such a repair process should be effective against various stresses as described above.

  Previously proposed techniques (compositions and / or methods) for the treatment of damaged keratin fibers are often temporary and achieve the correct recovery of the original state of keratin fibers. Speaking of not doing it, it is still inadequate. Furthermore, there remains a strong interest in finding an efficient protection system for keratin fibers.

Atom / Fragment contribution method for controlling octanol-water partition coefficient (J. Pharm. Sci. 84: 83-92, 1995)

  Hydrophobic molecules can be useful to at least partially restore the hydrophobicity of the keratin fibers and fill the gaps in the damaged portions of the keratin fibers.

  However, due to their hydrophobic nature, hydrophobic molecules are less likely to penetrate or deposit on keratin fibers. Therefore, these benefits over keratin fibers are insufficient. This also means that the efficiency of cosmetic treatment of keratin fibers using hydrophobic molecules is low and a large amount of hydrophobic molecules are required in the formulations used for cosmetic treatment.

  Therefore, the object of the present invention is to provide a hydrophobic molecule that has a good cosmetic effect, in particular an excellent protective effect as well as an excellent repair or recovery effect on keratin fibers and can be effective against various stresses for a long time. And it is providing the new processing method of keratin fiber (hair etc.) used in a comparatively small amount.

The aforementioned object of the present invention is a method of treating keratin fibers, comprising:
Applying a composition comprising at least one colorless hydrophobic molecule on the keratin fibers;
Next, the step of placing the keratin fibers in the closed space;
And then heating the keratin fiber.
The composition may also be a reducing agent of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
This can also be achieved by a process that does not contain any source of carbonate ions.

  The foregoing method may further comprise rinsing the keratin fibers after applying the composition onto the keratin fibers and / or after heating the keratin fibers.

  Mechanical tension may be applied to the keratin fibers. Mechanical tension may be provided by using at least one reshaping means selected from the group consisting of curlers, rollers, plates and irons.

  The enclosed space may be formed by at least one covering means. The covering means may be hard or soft. The covering means may include at least one member selected from the group consisting of a film and a sheet.

  In the foregoing method, during the step of heating the keratin fibers, the keratin fibers may be heated at 45 ° C to 250 ° C. The keratin fibers may be heated by at least one heater that supplies at least one selected from the group consisting of hot air, hot steam, high frequency induction heating, microwave heating, infrared irradiation, laser and flash lamp irradiation. The covering means and / or the reshaping means may comprise the heater.

  Hydrophobic molecules can have a molecular weight of 5000 or less.

  Hydrophobic molecules can have log P values greater than 0.5.

  A preferred log P value is from 0.55 to 26.0, more preferably from 0.60 to 12.0, and more preferably from 0.65 to 5.

  The hydrophobic molecule can have at least one aromatic group.

  The hydrophobic molecule can have at least one functional group capable of forming hydrogen bonds.

  Preferred hydrophobic molecules are not salts.

  The composition may comprise colorless hydrophobic molecules in an amount of 0.01% to 20% by weight relative to the total weight of the composition. The pH of the composition may range from 4 to 11.

Another aspect of the present invention is a composition for treating keratin fibers heated in an enclosed space, comprising at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
This composition does not contain any carbonate ion source.

The present invention further provides a kit for treating keratin fibers,
An apparatus comprising at least one coating means for forming an enclosed space, and at least one heater for heating keratin fibers in the enclosed space;
Contains at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
And a composition containing no source of carbonate ions.

  As a result of intensive studies, the present inventors have obtained a good cosmetic effect on keratin fibers such as hair by using a composition containing colorless hydrophobic molecules in combination with a specific heating method for keratin fibers. In particular, it has been discovered that hydrophobic molecules can be used to provide excellent protective effects that can be effective against various stresses over long periods of time, as well as excellent repair or excellent recovery effects.

  The particular heating method described above is performed in a closed or closed environment that limits the evaporation of water or moisture from the keratin fibers and maintains the keratin fibers at high temperatures, preferably in a moist state. Thereby, the keratin fibers can be heated evenly and the hydrophobic molecules can easily penetrate into or deposit on the keratin fibers, so that even after some stress such as shampoo, the hydrophobic molecules Molecules can remain for a long time in or on keratin fibers.

  Since colorless hydrophobic molecules can easily stay on or in keratin fibers, the method according to the present invention is compared to conventional methods in which hydrophobic molecules are less likely to stay on or in keratin fibers. By using colorless hydrophobic molecules even in a small amount, good cosmetic effects, particularly good mechanical properties can be exhibited.

  The composition used in the present invention must not contain a reducing agent such as a thiol compound. Therefore, malodor derived from the reducing agent can be prevented. Furthermore, the composition used in the present invention should not contain any carbonate ion source as defined above. Thus, cosmetic treatment is more effective because it does not produce carbon dioxide that forms bubbles that can inhibit the deposition or penetration of hydrophobic molecules on or into keratin fibers.

(Composition)
The composition used in the present invention comprises at least one colorless hydrophobic molecule.

  As used herein, the term “colorless” means that the hydrophobic molecule does not have an inherent color. Thus, for example, pigments do not correspond to hydrophobic molecules, whether they are originally hydrophobic, or are hydrophobic due to surface treatment.

  The term “molecule” means a low molecular weight substance, and therefore a polymer does not correspond to a molecule, whether it is originally hydrophobic or is hydrophobic by being surface treated. Accordingly, the colorless hydrophobic molecule according to the present invention preferably has a molecular weight of 5000 or less, more preferably 3000 or less, and even more preferably 1000 or less.

  The colorless hydrophobic molecule used in the present invention may preferably have a log P value higher than 0.5.

  In the present invention, the log P value represents the partition coefficient of the molecule between octanol and water. This value is obtained by using the method described by Meylan and Howard in "Atom / Fragment contribution method for controlling octanol-water partition coefficient" (J. Pharm. Sci. 84: 83-92, 1995). be able to. This value can also be calculated using a number of software programs that determine the log P value based on the chemical structure of the molecule of interest. Epiwin from the Environmental Office of the United States is an example of such a software program.

  The colorless hydrophobic molecule used in the present invention can preferably have at least one aromatic group. Aromatic groups are monovalent or divalent aromatic hydrocarbon groups such as phenyl and phenylene; monovalent or divalent condensed aromatic hydrocarbon groups such as naphthalenyl and indenyl; furanyl, pyrrolyl, imidazolyl, pyrazolyl, pyridinyl, Monovalent or divalent aromatic heterocyclic groups such as pyridazinyl, pyrimidinyl and pyrazinyl; and monovalent or divalent aromatic condensed hetero groups such as indolyl, benzofuranyl, quinolinyl, isoquinolinyl, quinoxalinyl, chromanyl, pteridinyl and dihydropteridinyl It may be a cyclic group.

  The colorless hydrophobic molecule used in the present invention may preferably have at least one functional group capable of forming a hydrogen bond. Examples of functional groups include hydroxyl groups, thiol groups, amino groups, amide groups, and the like. A hydroxy group is preferred as the functional group.

  Of the suitable colorless hydrophobic molecules used in the present invention, hydrophobic antioxidants, hydrophobic antifouling agents, hydrophobic anti-radical agents and hydrophobic vitamins are preferred. These compounds may be natural or synthetic.

  Examples of colorless hydrophobic molecules that can be used in the present invention are listed in the table below.

  The colorless hydrophobic molecule is in an amount ranging from 0.01% to 20% by weight, preferably in an amount ranging from 0.1% to 5% by weight, based on the total weight of the composition, from 0.5% to 3% by weight. Etc., and may be present in a range of quantities.

  The composition used in the present invention may also be a reducing agent having the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
It does not contain any carbonate ion source.

  The pH of the composition may be in the range of 4 to 11, preferably between 6.0 and 9.0, more preferably between 6.0 and 8.0. Since the pH of the composition is neither relatively high nor low, damage to the keratin fibers by the composition can be reduced.

  In order to adjust the pH, acid or alkalinizing agents other than the ion source of the present invention may be used alone or in combination. The amount of acidifying or alkalizing agent is not limited, but may be 0.1% to 5% by weight relative to the total weight of the composition. Examples of the acidifying agent include any inorganic acid or organic acid generally used in cosmetics [citric acid, lactic acid, phosphoric acid, hydrochloric acid (HCl) and the like]. HCl is preferred. Alkalizing agents can include any inorganic or organic basifying agent commonly used in cosmetics, such as: ammonia; alkanolamine (monoethanolamine, diethanolamine and triethanol) Amine, isopropanolamine, etc.); sodium hydroxide and potassium hydroxide; urea, guanidine and its derivatives; basic amino acids (such as lysine or arginine); and the following structures:

(Wherein, R represents an alkylene such as propylene which is optionally substituted by hydroxyl or C ₁ -C ₄ alkyl _{group, R 1, R 2, R} 3 and R ₄ are independently hydrogen atom, an alkyl the diamine (1,3-propanediamine and its derivatives such as those described in a group or a C ₁ -C ₄ hydroxyalkyl group) can be exemplified as an example). Arginine and monoethanolamine are preferred.

  The composition used in the present invention may also contain one or more additional cosmetic agents. The amount of additional cosmetic additives is not limited, but may be from 0.1% to 10% by weight relative to the total weight of the composition. Cosmetic additives may be selected from the group consisting of: volatile or non-volatile, linear or cyclic, amine-type or not, silicone, cationic, anionic, nonionic Or other amphoteric polymers, peptides and derivatives thereof, protein hydrolysates, synthetic or natural waxes, swelling agents and penetrants, and other active compounds such as: anionic, cationic, nonionic, amphoteric or Zwitterionic surfactants, hair loss inhibitors, antidandruff agents, associative or otherwise natural or synthetic thickeners, suspending agents, sequestering agents, opacifying agents, pigments Sunscreens, fillers, vitamins or provitamins, minerals, vegetable or synthetic oils, and flavorings, preservatives, stabilizers, and mixtures thereof.

  The vehicle for the composition used in the present invention is preferably an aqueous medium consisting of water and may advantageously contain one or several cosmetically acceptable organic solvents, Such organic solvents include, among others, alcohols (such as ethyl alcohol, isopropyl alcohol, benzyl alcohol and phenylethyl alcohol), or polyols or polyol ethers (ethylene glycol monomethyl ether, ethylene glycol monoethyl ether and ethylene glycol mono). Butyl ether), propylene glycol or its ether (propylene glycol monomethyl ether, etc.), butylene glycol, dipropylene glycol, and diethylene glycol alkyl ether (diethylene glycol monoethyl). Ether or diethylene glycol monobutyl ether). Water may be present at a concentration of 10% to 90% by weight relative to the total weight of the composition. Thus, the organic solvent may be present at a concentration of 0.1% to 20% by weight, preferably 1% to 10% by weight, relative to the total weight of the composition.

  The composition used in the present invention may be present in any form such as lotion, thick or otherwise gel, or cream.

(Keratin fiber processing method)
The method for treating keratin fibers according to the present invention comprises:
Applying a composition comprising at least one colorless hydrophobic molecule on keratin fibers, as described above;
Next, the step of placing the keratin fibers in the closed space;
Then, it can implement by the process of heating this keratin fiber.

  According to the present invention relating to a method for treating keratin fibers, keratin fibers (hair etc.) are subjected to a specific heating method carried out in an enclosed space.

  The heating method can be performed by any heating means that can be freely controlled to achieve the desired temperature for the method.

  The heating method preferably forms an enclosed space to limit evaporation of volatile components (such as water) from the keratin fibers in the aforementioned composition, and maintains a predetermined temperature in the heating device throughout the method It may be implemented by using a special heating device that can.

  If evaporable components (such as water) in the aforementioned composition evaporate from the keratin fibers, it is believed that most of the thermal energy added to the keratin fibers will be consumed by evaporation, and therefore the temperature of the keratin fibers is The temperature cannot be increased to a predetermined temperature until all evaporable components in the composition are evaporated.

  Said heating device may comprise any thermal energy source in contact with or away from the keratin fibers and at least one means for forming an enclosed space surrounding the keratin fibers. Good.

  A thermal energy source is used to heat the keratin fibers. The thermal energy source may be at least one heater that supplies at least one selected from the group consisting of hot air, hot steam, high frequency induction heating, microwave heating, infrared irradiation, laser, and flash lamp irradiation.

  The enclosed space may be formed by at least one covering means. A plurality of covering means may be used. The covering means may be hard or soft.

  The covering means may include at least one member selected from the group consisting of a film and a sheet. The material of the film or sheet is not limited. For example, the film or sheet may include a thermoplastic or thermosetting resin, paper, a textile material, a bonnet, a metal foil (such as an aluminum foil).

  For example, the film or sheet may be set on a heating rod, a heating bar or a heating plate covered with keratin fibers.

  According to the invention, the covering means may comprise a thermal energy source. Thus, for example, a film or sheet containing a heater may be set on a rod, bar or plate covered with keratin fibers.

  The occluded state can limit the evaporation of evaporable components (such as water) in the aforementioned composition applied to the keratin fibers, and thus the temperature of the keratin fibers is a conventional method or apparatus for heating keratin fibers in the open state. The temperature can be raised higher than the temperature that can be obtained. Furthermore, keratin fibers can be effectively heated, and keratin fibers can be heated evenly.

  According to a variant of the invention, the enclosed space may comprise an opening whose surface area is less than 5%, preferably less than 3%, more particularly less than 0.5% of the total surface area of the covering means. According to this variant, the total surface area of the covering means comprises the surface area of the opening means (if present) for the covering means.

  The opening may be a passage, a hole or a hole, so that the air between the enclosed space and its exterior, especially when the reaction (e.g. forming a vapor inside the enclosed space) is too great. It is thought that exchange will be possible. Conversely, a person skilled in the art can form the opening so that the diffusion of heat in the enclosed space is not hindered.

  The keratin fibers can be heated at 45 ° C. to 250 ° C., preferably 60 ° C. to 200 ° C., more preferably 60 ° C. to 150 ° C., more preferably 60 ° C. to 90 ° C. during the step of heating the keratin fibers.

  The heating method may be carried out for an appropriate time required to treat the keratin fibers. The length of time for the heating method is not limited, but may be 1 minute to 2 hours, preferably 1 minute to 1 hour, more preferably 1 minute to 30 minutes. For example, the time for heating may be 5 to 20 minutes, preferably 10 to 15 minutes.

  The keratin fibers may be rinsed after the step of applying the composition onto the keratin fibers and / or after the step of heating the keratin fibers.

[Permanent Deformation Method of Keratin Fiber]
According to the present invention relating to a method for treating keratin fibers, the keratin fibers may be subjected to mechanical tension typically used for permanent deformation.

  The permanent deformation method for keratin fibers may be performed as follows when mechanical tension is applied to the keratin fibers.

  First, mechanical tension is applied to the keratin fiber for deformation. Mechanical tension can be applied to the keratin fibers by any means for transforming the keratin fibers into the intended shape. For example, the mechanical tension may be provided by at least one reshaping means selected from the group consisting of curlers, rollers, clips, plates and irons. The reshaping means may include at least one heater as described above. When keratin fibers are wound around the curlers, this winding may be performed for the entire length of the keratin fibers or, for example, for half the length of the keratin fibers. For example, depending on the desired hairstyle shape and the amount of curl, winding may be performed in a somewhat thick bundle.

  Next, the aforementioned composition is applied to keratin fibers. You may apply this composition by arbitrary means, such as a brush and a comb. Keratin fibers that have been subjected to mechanical tension should be treated with the composition. It is considered that the keratin fiber can be left as it is for a certain length of time if necessary.

  Finally, the above heating method is performed. Thermal energy is applied to the keratin fibers under occlusive conditions, as described above.

  This method for permanent deformation of keratin fibers can be performed without any step of oxidizing the keratin fibers. Therefore, the time required for the method according to the present invention can be made shorter than the time required for the conventional method requiring an oxidation step. Furthermore, damage to the keratin fibers due to the oxidation process can be avoided.

  The keratin fibers may be rinsed after the step of applying the composition onto the keratin fibers and / or after the step of heating the keratin fibers.

One embodiment of the hair treatment method according to the invention is a method for reshaping or permanently deforming keratin fibers, especially hair, comprising:
a) placing the keratin fibers under mechanical tension by winding on at least one reshaping means or mechanically tensioning means to form a curl;
b) applying the composition described above to the keratin fibers;
c) an optional step of rinsing the keratin fibers,
d) placing at least one covering means on the reshaping means or mechanical tensioning means (or vice versa) to form one or more enclosed spaces; and
e) A method comprising heating the keratin fiber at a temperature between 45 ± 2 or 3 ° C. and 250 ± 2 or 3 ° C. for 1 minute to 2 hours.

  In this method, the temperature can be set, adjusted and adjusted by using one or more heating means, Digital Surface Sensor Module set on keratin fibers, reference number MT-144 [by Sakaguchi Electric Heat (Japan) It may be measured using a temperature measurement probe such as “sold on the market”. Usually, the probe is set on a single keratin fiber. However, the probe is set on the part of the keratin fiber that is in direct contact with the occluded space, and more preferably, the probe is in direct contact with the occluded space to form the keratin fiber curl end (when using curlers). ) It is advantageous to set on a part of the keratin fiber.

  Preferably, the temperature is measured at an atmospheric pressure of 101325 Pa.

  According to the present invention, the temperature of the keratin fibers may be constant (variation ± 2 or 3 ° C.) over the head of the individual (when the keratin fibers are hair) and the probe may be of any kind of keratin It may be set on the fiber.

  When the keratin fibers are hair, according to the present invention, a constant temperature (variation ± 2 or 3 ° C.) can be obtained for any type of hair, and the temperature of the hair can be adjusted to a specific temperature. During heating, it can be controlled to be constant ± 2 or 3 ° C. Thus, the hairstyle becomes uniform and homogeneous throughout the hair, and a better hairstyle can finally be obtained.

  Advantageously, the covering means may comprise one or more insulations, and more advantageously the covering means may consist of such materials.

  The term “insulation” means any material having a thermal conductivity of 0 to 1 W / m ° C. (PVC: 0.17 W / m ° C.).

  Preferably, the heating means may be adjusted so that the temperature measured on the keratin fibers is 50 ° C. or more, more preferably 55 ° C. to less than 150 ° C., even more preferably less than 100 ° C. Heating is preferably performed by heating with electric resistance.

  Advantageously, the coating means is impermeable for the composition used in step b).

  In the embodiment described above, at least one of the reshaping means or the mechanical tensioning means and at least one of the cover means may include a heater.

  In the above-described embodiment, the “closure space” means that when the covering means is placed on the reshaping means or the mechanical tensioning means (or vice versa), these means are combined to form a closed structure (in which Heat can diffuse, but heat cannot diffuse out of the closed structure or difficult to diffuse out of the structure). It is preferable that the covering means and the re-shaping means or the mechanical tension applying means can form a closed space when set on the head (when the keratin fibers are hair).

  The enclosed space is a condensation cage (in which water and components in the composition used in step b) can evaporate from the keratin fibers, adhere to the walls of the coating means and fall onto the keratin fibers ( condensation cage) may be formed. This cycle is believed to be repeated during the heating of the keratin fibers. Thus, the keratin fibers can always be kept moist, and drying and deterioration of the keratin fibers are prevented.

  Since the keratin fibers in the enclosed space can be kept moist and the temperature of the keratin fibers can be kept constant, the formation of the enclosed space is an important feature of the present invention.

  Preferably, the method of the present invention comprises the additional step of tightening the covering means on the individual's head (if the keratin fibers are hair) by means of a resilient cord, an extensible band or a stretch material. A process may be included.

  According to the method of the present invention, the amount of cosmetic ingredients in the composition is advantageously reduced compared to methods in the prior art because there is a closed space in which the composition can continuously set on keratin fibers. To do. The amount of cosmetic ingredients may be from 0.3% to 3% by weight of the composition.

  In a preferred embodiment, the covering means may be placed on each hair curler (when the keratin fibers are hair) as reshaping means or mechanical tensioning means. In other words, each of the hair curlers (when two or more hair curlers are used) may be individually covered by the covering means. It is advantageous to cover each hair curler, as it prevents the composition applied on the keratin fibers in step b) from leaking into the scalp.

  In another preferred embodiment, the covering means may cover all hair curlers (when using two or more hair curlers). In other words, the covering means may cover the entire head (when the keratin fibers are hair).

  Advantageously, the enclosed space formed in step d) may be maintained during step e). In other words, the covering means may be removed only after step e) or after stopping the heating in step e).

  If desired, the composition may be applied to the keratin fibers before applying mechanical tension to the keratin fibers. The keratin fibers may optionally be before and / or after applying mechanical tension to the keratin fibers, before and / or after applying the aforementioned composition to the keratin fibers, and before and / or after heating the keratin fibers. It can be considered that it can be left as it is for a certain length of time.

  After the aforementioned step e), if necessary, the keratin fibers may be fixed by oxidation after being removed from the coating means.

(Product)
The present invention further comprises a composition for treating keratin fibers heated in an enclosed space, comprising at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
The composition also contains no source of carbonate ions.

  It is believed that this composition need not be used in combination with an oxidant used in conventional permanent deformation of keratin fibers. Therefore, when the keratin fibers are permanently deformed, the composition may be used in one step, but in the conventional permanent deformation of keratin fibers, two steps (reduction step and oxidation step) are required.

  The composition may have the same technical characteristics as the composition described above.

The present invention further provides a kit for treating keratin fibers,
At least one reshaping means for imparting mechanical tension to the keratin fibers,
An apparatus comprising at least one coating means for forming an enclosed space, and at least one heater for heating the keratin fibers in the enclosed space;
Contains at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
And a composition containing no source of carbonate ions.

  The coating means, heater and composition in the kit may be the same as described above.

(Example)
The invention will now be described in more detail by way of examples, which should not be construed as limiting the scope of the invention.

Composition 1
A hair treatment composition (referred to as “Composition 1”) having the following composition shown in Table 1 was prepared (the unit of the active ingredient was wt%).

(Example 1)
Composition 1 was applied to 1 g of a natural Japanese hair bundle previously wound on a 1.7 cm heated perm roller. The perm roller was then covered with a plastic film and inserted into a Digital Perm Machine (Oohiro, model number ODIS-2). After the heating method at 90 ° C. for 15 minutes, the hair was rinsed, removed from the permanent roller and dried.

  The hair was resistant to various external attacks.

  The following compositions were prepared (units of active ingredient are% by weight).

Composition 2
A hair treatment composition (referred to as “Composition 2”) having the following composition shown in Table 2 was prepared (the unit of active ingredient was wt%).

(Example 2)
Composition 2 was applied to 1 g of a Japanese hair bundle. Next, the hair was wrapped with a plastic film and covered with a soft heating film (FTH-050, manufactured by Tokyo Institute of Technology). The hair was heated at 90 ° C. for 10 minutes under occlusive conditions. After the heating step, the hair was rinsed and dried.

  The hair was resistant to various external attacks.

Claims (15)

A method for treating keratin fibers, comprising:
Applying a composition comprising at least one colorless hydrophobic molecule on the keratin fibers;
Next, the step of arranging the keratin fibers in the closed space;
And then heating the keratin fiber.
The composition may also be a reducing agent of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
The method also does not contain a source of carbonate ions.   The method of claim 1, further comprising rinsing the keratin fibers after the step of applying the composition onto the keratin fibers and / or after the step of heating the keratin fibers.   3. The method according to claim 1 or 2, further comprising applying mechanical tension to the keratin fiber.   The method according to claim 1, wherein the enclosed space is formed by at least one covering means.   5. A method according to claim 4, wherein the covering means is hard or soft.   6. The method according to claim 4, wherein the covering means includes at least one member selected from the group consisting of a film and a sheet.   The method according to any one of claims 1 to 6, wherein during the step of heating the keratin fibers, the keratin fibers are heated at 45 ° C to 250 ° C.   The keratin fiber is heated by at least one heater that supplies at least one selected from the group consisting of hot air, hot steam, high frequency induction heating, microwave heating, infrared irradiation, laser and flash lamp irradiation. Item 8. The method according to any one of Items 1 to 7.   9. A method according to claim 8, wherein the coating means comprises the heater.   10. The method according to any one of claims 1 to 9, wherein the hydrophobic molecule has a molecular weight of 5000 or less.   11. A method according to any one of claims 1 to 10, wherein the hydrophobic molecule has a log P value greater than 0.5.   12. The method according to any one of claims 1 to 11, wherein the hydrophobic molecule has at least one aromatic group.   13. The method according to any one of claims 1 to 12, wherein the composition comprises the colorless hydrophobic molecule in an amount of 0.01% to 20% by weight relative to the total weight of the composition. A composition for treating keratin fibers heated in an enclosed space, comprising at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
A composition containing no carbonate ion source. A kit for treating keratin fibers,
An apparatus comprising at least one covering means for forming an enclosed space, and at least one heater for heating the keratin fibers in the enclosed space;
Contains at least one colorless hydrophobic molecule,
The reducing agent is also of the formula:

(Where
X is a group selected from the group consisting of O ⁻ , OH, NH ₂ , O—OH and O—COO ⁻ ).
And a composition that also does not contain a source of carbonate ions.