JP2018193316A - Foamable aerosol composition for wavy hair - Google Patents

Abstract

To provide a foamable aerosol composition for wavy hair which can be easily returned to wavy hair by applying to stretched and disordered wavy hair due to drying, and can maintain its style for a long time.SOLUTION: A foamable aerosol composition for wavy hair consists of aqueous stock solution containing polyurethane, polyol, foaming agent and water, and liquid gas, in which the aqueous stock solution contains polyurethane by 0.1 to 5 mass% in terms of solid content, and polyol by 0.5 to 10 mass%, and water by 80 to 98 mass%.SELECTED DRAWING: None

Description

  The present invention relates to a foamable aerosol composition for wave hair. More specifically, the present invention is a foamable aerosol composition for wave hair that can be easily returned to wave hair by applying to wave hair that has been stretched and broken by drying, and can maintain its style for a long time. Related to things.

  2. Description of the Related Art Conventionally, hair forms have been developed for maintaining a long wave in hair that has been curled by permanent wave treatment (wave hair). Patent Document 1 discloses a hair foam composition containing sericin. Patent Document 2 discloses a cosmetic composition containing polyurethane.

JP 2012-56850 A Special table 2012-518605 gazette

  The compositions described in Patent Document 1 and Patent Document 2 are not sufficiently effective in restoring and maintaining the curl of wave hair that has been stretched and broken by drying. In particular, the cosmetic composition described in Patent Document 2 contains a vinylpyrrolidone copolymer together with polyurethane. Such a cosmetic composition, after being applied to wave hair, tends to collapse the film and cannot maintain curl for a long time.

  The present invention has been made in view of such a conventional problem, and can be easily returned to the wave hair by applying to the wave hair that has been stretched and broken by drying, and the style is maintained for a long time. An object is to provide a foamable aerosol composition for wave hair.

  The present invention for solving the above-described problems mainly includes the following configurations.

  (1) An aqueous stock solution containing polyurethane, polyol, foaming agent and water, and a liquefied gas. The aqueous stock solution contains 0.1 to 5% by mass of the polyurethane in terms of solid content, and 0.5% of the polyol. A foamable aerosol composition for wave hair, comprising 10 to 10% by mass and 80 to 98% by mass of the water.

  According to such a configuration, the foamable aerosol composition for wave hair includes specific amounts of polyurethane, polyol, foaming agent and water. Such a foamed aerosol composition for wave hair forms a foam that is easy to adjust to hair, and has good permeability to dry hair. Therefore, the curl is easily restored in a short time. Moreover, the foamable aerosol composition for wave hair contains a polyurethane and a polyol. Such a foamable aerosol composition for wave hair tends to form a soft film on the wave hair and keeps curling long.

  (2) The foamable aerosol composition for wave hair according to (1), wherein the foaming agent is an associative thickener and is contained in an amount of 0.5 to 5% by mass in the aqueous stock solution.

  According to such a configuration, the discharge of the foamable aerosol composition for wave hair is liable to be liquefied when it penetrates into the hair, and is more familiar to dry hair. Therefore, the foamable aerosol composition for wave hair tends to restore curl in a shorter time. Moreover, the foamable aerosol composition for wave hair is not sticky.

  (3) The foamable aerosol composition for wave hair according to (1) or (2), wherein the content of the liquefied gas is 1 to 10% by mass.

  According to such a configuration, the discharge of the foamable aerosol composition for wave hair is more easily adapted to dry hair. Therefore, the foamable aerosol composition for wave hair is easy to restore curl in a shorter time.

  According to the present invention, there is provided a foamable aerosol composition for wave hair that can be easily returned to wave hair by applying to wave hair that has been stretched and broken by drying, and that the style can be maintained for a long time. can do.

<Foamable aerosol composition for wave hair>
The foamable aerosol composition for wave hair according to an embodiment of the present invention (hereinafter also simply referred to as an aerosol composition) comprises an aqueous stock solution containing polyurethane, polyol, foaming agent and water, and a liquefied gas. The aqueous stock solution contains 0.1 to 5% by mass of polyurethane in terms of solid content, 0.5 to 10% by mass of polyol, and 80 to 98% by mass of water. Each will be described below.

(Aqueous stock solution)
The aqueous stock solution contains polyurethane, polyol, foaming agent and water.

-Polyurethane Polyurethane is formulated to form a flexible film on the surface of the wave hair and maintain the wave hair style for a long time.

  The raw material which comprises a polyurethane is not specifically limited. For example, polyurethane is made of polyol (polyester polyol, polyether polyol, acrylic polyol, etc.) and isocyanate (2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4-diphenylmethane diisocyanate, tolidine diisocyanate, 1,6-hexamethylene diisocyanate and the like). Polyurethane may be used in combination.

  The polyurethane content may be 0.1% by mass or more, preferably 0.5% by mass or more, in the aqueous stock solution in terms of solid content. Moreover, content of a polyurethane should just be 5 mass% or less in aqueous | water-based stock solution in conversion of solid content, and it is preferable that it is 3 mass% or less. When the content of polyurethane is less than 0.1% by mass, the aerosol composition has a weak coating film and is difficult to maintain a hairstyle. On the other hand, when the polyurethane content exceeds 5% by mass, the aerosol composition is difficult to wash off.

-Polyol Polyol is blended so that the foam of the aerosol composition can easily adhere to and permeate the hair, and the hair style that has been stretched and broken by drying can be easily returned to wave hair in a short time. The polyol is blended to form a flexible and hard-to-peel film on the surface of the wave hair and maintain the style for a long time.

  The polyol is not particularly limited. For example, the polyol is a polyhydric alcohol having 3 to 5 carbon atoms such as ethylene glycol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, and glycerin. The polyol may be used in combination.

  The content of the polyol may be 0.5% by mass or more in the aqueous stock solution, and is preferably 1% by mass or more. Moreover, content of a polyol should just be 10 mass% or less, and it is preferable that it is 5 mass% or less. When the content of the polyol is less than 0.5% by mass, the foam of the aerosol composition is less likely to penetrate into the hair and the wave hair is less likely to be restored in a short time. Moreover, the film obtained is hard and easily peeled off, making it difficult to maintain the style for a long time. On the other hand, when the polyol content exceeds 10% by mass, the resulting coating becomes too soft and the style tends to collapse.

・ Foaming agent Foaming agent is formulated to form a foam by holding the liquefied gas in the aqueous stock solution in the aerosol container and foaming the aqueous stock solution by evaporation of the liquefied gas when discharged outside. .

  The foaming agent is not particularly limited. In one example, the foaming agent is an association of (acrylic acid / itaconate steareth) copolymer, (acrylic acid / itaconate ceteth) copolymer, acrylic acid / aminoacrylate / C10-30 alkyl PEG-20 itaconic acid) copolymer, and the like. Type thickener: polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkyl ether, polyethylene glycol fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether fatty acid Nonionic surfactants such as esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters; fatty acid soaps, alkyl sulfates, polyoxyethylenes Anionic surfactants such as alkyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates; cationic surfactants such as alkyl ammonium salts, polyoxyethylene alkyl amines; alkyl betaines, fatty acids Amphoteric surfactants such as amidopropyl betaine; silicone surfactants; amino acid surfactants such as N-acyl glutamate, N-acyl glutamic acid, N-acyl glycine salt, and N-acyl alanine salt. A foaming agent may be used in combination.

  The content of the foaming agent is not particularly limited. For example, the content of the foaming agent is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more in the aqueous stock solution. In addition, the content of the foaming agent is preferably 10% by mass or less, more preferably 5% by mass or less, in the aqueous stock solution. When the content of the foaming agent is less than 0.1% by mass, the aerosol composition has low foamability and is difficult to form a foam. On the other hand, when the content of the foaming agent exceeds 10% by mass, the foam is difficult to disappear, the permeability to the hair tends to be slow, and the foaming agent tends to remain on the hair.

  The aerosol composition of the present embodiment is easy to form a foam that easily liquefies and penetrates into hair, and further has no stickiness and excellent usability. It is preferable that it is an agent. Further, when the foaming agent is an associative thickener, the content of the foaming agent is easy to form foam that easily penetrates into the hair, is not sticky, and has a better feeling of use. It is preferable that it is 0.5-5 mass%.

Water Water is the main component of the aqueous stock solution, and forms a liquid film of foam. It is blended to wet hair and restore hairstyle that has been stretched and broken by drying to wave hair.

  Water content should just be 80 mass% or more in an aqueous | water-based stock solution, and it is preferable that it is 85 mass% or more. The water content may be 98% by mass or less, and is preferably 95% by mass or less. If the water content is less than 80% by weight, the aerosol composition takes time to wet the hair. Therefore, the aerosol composition tends to take time to restore the wave hair. On the other hand, when water exceeds 98 mass%, an aerosol composition becomes difficult to contain other components, such as a polyurethane, a polyol, and a foaming agent, required amount.

-Optional component The aqueous undiluted solution may contain an optional component as appropriate in addition to the above-described polyurethane, polyol, foaming agent, and water. The optional component is not particularly limited. For example, the optional components are various active ingredients, alcohols, oils, viscosity modifiers, powders and the like.

  The active ingredient is not particularly limited. For example, active ingredients are hyaluronic acid, sodium lactate, dl-pyrrolidone carboxylate, humectants such as keratin, lecithin, jojoba ester, ethyl hexyl paramethoxycinnamate, isopropyl paramethoxycinnamate, paramethoxysilica. Octyl cinnamate, octyl dimethoxybenzylidenedioxoimidazolidinepropionate, hexyl diethylaminohydroxybenzoylbenzoate, t-butylmethoxydibenzoylmethane, ethylhexyltriazone, octocrine, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, dihydroxybenzophenone , UV absorbers such as paraaminobenzoic acid, calcium pantothenate, sodium ascorbate, dl-α-tocopher Lumpur, vitamins such as tocopherol acetate, p-hydroxybenzoic acid ester, preservatives such phenoxyethanol, a perfume or the like. The active ingredient may be used in combination.

  When an active ingredient is included, the content of the active ingredient is not particularly limited. For example, the content of the active ingredient is preferably 0.01% by mass or more, and more preferably 0.05% by mass or more in the aqueous stock solution. Further, the content of the active ingredient is preferably 15% by mass or less, more preferably 10% by mass or less, in the aqueous stock solution. When the content of the active ingredient is less than 0.01% by mass, it is difficult for the aerosol composition to obtain the effect of containing the active ingredient. On the other hand, when the content of the active ingredient exceeds 15% by mass, the aerosol composition may not enhance or reduce the effect of containing the active ingredient.

  Alcohol is suitably contained as a solvent for dissolving an active ingredient that is insoluble in water, and for the purpose of adjusting foam foaming and defoaming properties and adjusting the wetness of the hair. Alcohol is not particularly limited. For example, the alcohol is a monohydric alcohol having 2 to 3 carbon atoms such as ethanol or isopropanol. Alcohol may be used in combination.

  When alcohol is contained, content of alcohol is not specifically limited. For example, the alcohol content in the aqueous stock solution is preferably 0.5% by mass or more, and more preferably 1% by mass or more. Further, the alcohol content is preferably 10% by mass or less, more preferably 5% by mass or less, in the aqueous stock solution. When the alcohol content is less than 0.5% by mass, the aerosol composition is difficult to obtain the effect of containing the alcohol. On the other hand, when the alcohol content exceeds 10% by mass, the aerosol composition is difficult to foam and the hair tends to dry faster.

  The oil component is preferably contained for the purpose of giving the wave hair gloss or suppressing drying. The oil content is not particularly limited. For example, the oil is isopropyl myristate, myristyl myristate, decyl oleate, isostearyl laurate, isocetyl myristate, isostearyl myristate, octyl dodecyl myristate, octyl palmitate, octyl stearate, octyl oleate Dodecyl, ethyl isostearate, cetyl isooctanoate, ethylene glycol dioctanoate, ethylene glycol dioleate, propylene glycol dicaprylate, propylene glycol dioleate, glyceryl tricaprylate, glyceryl tri (caprylate / caprate), glyceryl triisostearate, tri 2-ethylhexanoic acid trimethylolpropane, 2-ethylhexanoic acid alkyl, neopentanoic acid octyldodecyl, dimethyl Ester oils such as hexyldecyl octoate, cetyl lactate, triethyl citrate, dioctyl succinate, diisopropyl adipate, diethoxyethyl succinate; olive oil, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, Oils such as rapeseed oil, sesame oil, castor oil, linseed oil, safflower oil, jojoba oil, malt oil, coconut oil, palm oil; hydrocarbon oils such as liquid paraffin, squalene, squalane, isoparaffin; methylpolysiloxane, methylphenyl Silicone oils such as polysiloxane and cyclopentasiloxane; lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, lanolin alcohol, hexyl decanol, cetostearyl Higher alcohols such as lucol, octyldodecanol, oleyl alcohol, isostearyl alcohol; higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, linoleic acid, linolenic acid, beeswax, Waxes such as lanolin, candelilla wax and carnauba wax. Among these, it is preferable that the oil is an ester oil because it is easy to adjust to the wave hair, suppresses drying, and easily maintains the wave hair style. Oil may be used in combination.

  When oil is contained, the content of oil is not particularly limited. As an example, the oil content is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more in the aqueous stock solution. The oil content is preferably 10% by mass or less, more preferably 5% by mass or less, in the aqueous stock solution. When the oil content is less than 0.1% by mass, it is difficult for the aerosol composition to obtain the effect of containing the oil content. On the other hand, when the oil content exceeds 10% by mass, the aerosol composition tends to have poor foaming properties and is difficult to apply to the hair.

  The viscosity modifier is suitably contained for the purpose of adjusting the viscosity of the aqueous stock solution to adjust foaming and defoaming properties, and adjusting the wetness of the hair. The viscosity modifier is not particularly limited. For example, the viscosity modifier may be selected from cellulose polymers such as hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, sodium carboxymethylcellulose, xanthan gum, carrageenan, gum arabic, tragacanth gum, cationized guar gum, guar gum, gellan gum, locust bean. Gums such as gums, hydroxypropyl starch phosphate, starch, corn starch, wheat starch, dextran, sodium carboxymethyldextran, dextrin, pectin, sodium alginate, modified potato starch, carboxyvinyl polymer and the like. A viscosity modifier may be used in combination.

  When a viscosity modifier is included, the content of the viscosity modifier is not particularly limited. For example, the content of the viscosity modifier is preferably 0.01% by mass or more, and more preferably 0.1% by mass or more in the aqueous stock solution. Further, the content of the viscosity modifier is preferably 3% by mass or less, and more preferably 2% by mass or less in the aqueous stock solution. When the content of the viscosity modifier is less than 0.01% by mass, it is difficult for the aerosol composition to obtain the effect of containing the viscosity modifier. On the other hand, when the content of the viscosity modifier exceeds 3% by mass, the viscosity of the aqueous stock solution becomes too high, and the aerosol composition becomes difficult to foam and is easily sticky.

  The powder is suitably contained for the purpose of suppressing the reflection of light to make the hair color look beautiful, improving the combing, and the like. The powder is not particularly limited. For example, powder is talc, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silica, zeolite, ceramic powder, charcoal powder, nylon powder, silk Powder, urethane powder, silicone powder, polyethylene powder and the like. The powder may be used in combination.

  When powder is included, the content of powder is not particularly limited. As an example, the content of the powder is preferably 0.01% by mass or more, and more preferably 0.05% by mass or more in the aqueous stock solution. Further, the content of the powder is preferably 5% by mass or less, and more preferably 3% by mass or less in the aqueous stock solution. When the content of the powder is less than 0.01% by mass, it is difficult for the aerosol composition to obtain the effect of containing the powder. On the other hand, when the content of the powder exceeds 5% by mass, the powder attached to the hair is easily noticeable.

  The method for preparing the aqueous stock solution is not particularly limited. As an example, an aqueous stock solution can be prepared by adding polyurethane, polyol, foaming agent, optional components and the like to water and mixing them.

(Liquefied gas)
The liquefied gas is a liquid in the aerosol container and forms an aqueous stock solution and an emulsion, and is contained to form a foam by evaporating and foaming the aqueous stock solution when discharged outside.

  The liquefied gas is not particularly limited. For example, the liquefied gas may be propane, normal butane, isobutane and mixtures thereof, liquefied petroleum gas, trans-1,3,3,3-tetrafluoroprop-1-ene, trans-2,3,3. , 3-tetrafluoroprop-1-ene and other hydrofluoroolefins, dimethyl ether, and mixtures thereof. The liquefied gas may be used in combination.

  The content of the liquefied gas is not particularly limited. For example, the liquefied gas content in the aerosol composition is preferably 1% by mass or more, and more preferably 2% by mass or more. Moreover, it is preferable that it is 10 mass% or less in an aerosol composition, and, as for content of liquefied gas, it is more preferable that it is 8 mass% or less. When the content of the liquefied gas is less than 1% by mass, the aerosol composition is insufficient in foamability and easily spills, making it difficult to spread on the hair. On the other hand, when the content of the liquefied gas exceeds 10% by mass, the foam of the aerosol composition is difficult to disappear even if it is entrapped, and it takes time for the hair to get wet. Therefore, restoration to wave hair tends to be delayed.

  The manufacturing method of the aerosol product filled with the aerosol composition of the present embodiment is not particularly limited. As an example, first, the container body is filled with an aqueous stock solution. Next, an aerosol valve is attached to the opening of the container body, the liquefied gas is filled from the aerosol valve, and the aqueous stock solution and the liquefied gas are mixed. Thereafter, the discharge member is attached to the stem of the aerosol valve, and the cap is attached to the aerosol container, whereby the aerosol product is manufactured.

  The obtained aerosol product can discharge an aerosol composition by operating a discharge member. In the discharged aerosol composition, the liquefied gas is vaporized to form bubbles. When this foam penetrates into the hair, it disappears so as to soak into the hair, and the hair is quickly wetted to restore curl. The aerosol composition also forms a soft film on the restored curl and maintains the restored curl.

  The specific gravity of the foam of the aerosol composition is preferably 0.04 g / mL or more, and more preferably 0.05 g / mL or more. Moreover, it is preferable that the specific gravity of a foam is 0.1 g / mL or less, and it is more preferable that it is 0.08 g / mL or less. When the specific gravity of the foam is within the above range, the foam of the aerosol composition is easily defoamed so as to be defoamed and soaked into the hair.

  Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to these examples.

<Example 1>
An aqueous stock solution A of 95.0 g (95.0 mass%) having a formulation shown in Table 1 below was filled in an aluminum pressure resistant container, and an aerosol valve was fixed. An aerosol composition was produced by charging 5.0 g (5.0% by mass) of liquefied petroleum gas (* 1) from an aerosol valve and mixing the aqueous stock solution and liquefied petroleum gas. A discharge member (a cross-sectional area of the discharge hole was 3.8 mm ² ) was attached to the obtained aerosol composition to produce an aerosol product.
* 1: The pressure at 25 ° C is 0.5 MPa.

<Example 2>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution B shown in Table 1 was used.

<Example 3>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution C shown in Table 1 was used.

<Example 4>
An aerosol composition was produced in the same manner as in Example 1 except that 92.0 g (92.0 mass%) of aqueous stock solution B and 8.0 g (8.0 mass%) of liquefied petroleum gas (* 1) were filled. did.

＊２：アミゾールCDE（商品名 川研ファインケミカル（株）製）、
＊３：CRODAMOL MIO（商品名 クローダジャパン（株）製）、
＊４：STRUCTURE 2001（商品名 アクゾノーベル社製）、
＊５：Baycusanc1010（商品名 コベストロジャパン社製）、ポリウレタンの固形分が４０質量％である水分散液

* 2: Amisole CDE (trade name, manufactured by Kawaken Fine Chemical Co., Ltd.)
* 3: CRODAMOL MIO (product name: Croda Japan Co., Ltd.),
* 4: STRUCTURE 2001 (trade name, manufactured by Akzo Nobel),
* 5: Baycusanc1010 (trade name, manufactured by Covestro Japan Co., Ltd.), an aqueous dispersion in which the solid content of polyurethane is 40% by mass

<Comparative Example 1>
The same as Example 1 except that 95.0 g (95.0 mass%) of aqueous stock solution D shown in Table 2 below and 5.0 g (5.0 mass%) of liquefied petroleum gas (* 1) were filled. In addition, an aerosol composition was produced.

<Comparative Example 2>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution E shown in Table 2 was used.

<Comparative Example 3>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution F shown in Table 2 was used.

＊６：プラスサイズL-6330（商品名 互応化学工業（株）製）、固形分が30％であるエタノール溶液
＊７：プラスサイズL-2200（商品名 互応化学工業（株）製）、固形分が40％であるエタノール溶液

* 6: Plus size L-6330 (trade name, manufactured by Kyoyo Chemical Industry Co., Ltd.), ethanol solution with a solid content of 30% * 7: Plus size L-2200 (product name, manufactured by Kyogo Chemical Industry Co., Ltd.), solid Ethanol solution with 40%

<Comparative example 4>
The same as Example 1 except that 95.0 g (95.0 mass%) of the aqueous stock solution G shown in Table 3 below and 5.0 g (5.0 mass%) of liquefied petroleum gas (* 1) were filled. In addition, an aerosol composition was produced.

<Comparative Example 5>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution H shown in Table 3 was used.

<Comparative Example 6>
An aerosol composition was produced in the same manner as in Example 1 except that the aqueous stock solution I shown in Table 3 was used.

  The aerosol compositions and aerosol products obtained in Examples 1 to 4 and Comparative Examples 1 to 6 were evaluated for curl return, curl retention during drying, curl retention during hand combing, and foam specific gravity by the following evaluation methods. . The results are shown in Table 4.

1. Curl return Aerosol product was immersed in a constant temperature water bath at 25 ° C. for 1 hour, and 1 g of the aerosol composition adjusted to 25 ° C. was permed, dried, and dried into a hair bundle (length 30 cm) with extended curl The state of curling when applied was evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: When the foam was soaked into the palm, the foam disappeared as if soaking, the hair bundle was wetted and curled immediately.
○: When the foam was caught in the palm of the hand, the hair bundle was wet but the curl was curled in 10 to 30 seconds.
X: Even if the foam was trapped in the palm of the hand, the foam was likely to remain, the wetting of the hair bundle was slow, and it took 30 seconds or more to return the curl.
XX: When the foam was caught in the palm of the hand, the resin precipitated and adhered to the hair bundle.

2. Curl retention during drying The hair bundle used in “curl return” was dried, and the state when one end was fixed in a thermostatic chamber at 25 ° C. and suspended for 6 hours was evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: Curling was maintained in a state in which the hair bundle was gathered, and the length of the hair bundle was less than 120% of the length at the start of suspension.
○: The hair bundle is in a state of being gathered, but the curl is slightly extended, and the length of the hair bundle is less than 120 to 140% of the length at the start of hanging.
(Triangle | delta): The hair | bristle bundle was a little disperse | distributed, the curl was extended, and the length of the hair | bristle bundle was less than 140-160% of the length at the time of a suspension start.
X: The hair bundles varied, the curls were not extended, and the length of the hair bundles was 160% or more of the length at the start of suspension.

3. Curling during hand combing An aerosol product is immersed in a constant temperature water bath at 25 ° C. for 1 hour, and 1 g of the foam discharged from the aerosol composition adjusted to 25 ° C. is permed, dried, and the hair bundle (long) 30 cm), soaked and curled, and evaluated the state when the hair bundle, which had been dried, was taken 5 times between fingers.
(Evaluation criteria)
(Double-circle): Curling was maintained in a state where the hair bundle was gathered, almost the same as before the combing treatment.
○: The bundle of hairs that had been gathered expanded slightly and the curls slightly extended. Δ: The bundle of hairs that had been gathered after 3-5 times spread and the curls also extended.
X: The hair bundle which was gathered within 2 times spread, and the curl also extended.

4). Foam specific gravity Immerse an aerosol product in a constant temperature water bath at 25 ° C. for 1 hour, discharge the aerosol composition adjusted to 25 ° C. into a 25 mL cup, fill it with bubbles, measure the weight of the 25 mL foam, and measure the foam specific gravity. Was calculated.

  As shown in Table 4, each of the aerosol compositions of Examples 1 to 4 was able to restore curl in a short time and maintain the restored curl. Also, these curls were maintained even when combed. On the other hand, the aerosol composition of Comparative Example 1 was unable to restore curl in a short time. In addition, when the aerosol compositions of Comparative Examples 2 to 3 were both combed, the curl that was maintained easily extended. Furthermore, the aerosol composition of Comparative Example 4 was difficult to retain curl during drying or combing, and the aerosol composition of Comparative Example 5 was unable to retain curl during drying or combing. In the aerosol composition of Comparative Example 6, the resin was deposited when the foam was inserted into the hair, and the curl could not be restored.

Claims (3)

It consists of an aqueous stock solution containing polyurethane, polyol, foaming agent and water, and a liquefied gas.
The aqueous stock solution is a foamable aerosol composition for wave hair, containing 0.1 to 5% by mass of the polyurethane in terms of solid content, 0.5 to 10% by mass of the polyol, and 80 to 98% by mass of the water.   The foamable aerosol composition for wave hair according to claim 1, wherein the foaming agent is an associative thickener and is contained in an amount of 0.5 to 5% by mass in the aqueous stock solution.   The foamable aerosol composition for wave hair according to claim 1 or 2, wherein the content of the liquefied gas is 1 to 10% by mass.