JP7217088B2 - Hair styling composition and hair styling method - Google Patents

Description

The present invention relates to a hair styling composition that is sprayed onto hair and a hair styling method using this composition.

Many hair styling compositions that are used by being sprayed from an aerosol container or the like contain a hair styling polymer such as an (acrylates/diacetone acrylamide) copolymer as a main hair styling component. The hair-styling polymer has the advantage that it is easier to set the hair than wax, which is known as another hair-styling component. On the other hand, once it hardens, it has the disadvantage that it is difficult to change the hairstyle.

In order to compensate for the disadvantages of the above-mentioned hair styling polymers, for example, Patent Document 1 discloses that, in order to achieve good hair restyling properties, a stock solution containing a hydroxyethyl acrylate/methoxyethyl acrylate copolymer and a predetermined ratio of dimethyl ether and liquefied petroleum gas.

JP 2013-177352 A

By the way, there are many types of hairstyles, and it may take time to style some of them. However, a hair styling composition that contains a hair styling polymer and is sprayed is easy to fix the hairstyle with the polymer, but the hair is stiffened, so the hair styling time is not sufficient. Sometimes it was difficult to do the style as intended.

In view of the above circumstances, the present invention provides a hair styling composition containing a hair styling polymer, but capable of extending hair styling time when sprayed, and a hair styling method using this composition. With the goal.

The inventors of the present invention conducted intensive studies on a hair styling composition that is used by spraying it on the hair. As a result, it was found that the hair styling time can be extended by blending castor oil and/or liquid fatty acid together with the acrylic hair styling polymer. and completed the present invention.

That is, the hair styling composition according to the present invention is used by spraying it on the hair, and is characterized by containing an acrylic hair styling polymer and castor oil and/or liquid fatty acid. .

The hair styling composition according to the present invention contains, for example, an anionic acrylic polymer as the acrylic hair styling polymer. Further, in the hair styling composition according to the present invention, for example, the acrylic hair styling polymer includes (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP, (acrylates/di acetone acrylamide) copolymer or (acrylates/diacetone acrylamide) copolymer AMP.

The hair styling composition according to the present invention preferably contains polyoxyethylene sorbitol tetraoleate. When polyoxyethylene sorbitol tetraoleate is blended, hot water removal of the acrylic hair styling polymer is facilitated.

The hair styling method according to the present invention uses the hair styling composition according to the present invention.

According to the hair styling composition to be used by spraying on the hair according to the present invention, since castor oil and/or liquid fatty acid are blended together with the acrylic hair styling polymer, hair styling time can be extended.

In addition, according to the hair styling method using the hair styling composition to be sprayed onto the hair according to the present invention, castor oil and/or liquid fatty acid are blended in the composition together with the acrylic hair styling polymer. It becomes possible to style the hair by applying the hair, and it becomes easy to realize the intended hairstyle.

The present invention will be described below based on the embodiments of the present invention.
The hair styling composition according to the present embodiment contains an acrylic hair styling polymer, and castor oil and/or liquid fatty acid. In addition, as long as it is practically acceptable, raw materials that are blended in known hair styling compositions may be blended arbitrarily.

(Acrylic polymer for hair styling)
Acrylic hair styling polymers are known to have a property of forming a film and to be able to maintain a hairstyle. The hair styling composition of the present embodiment contains one or more acrylic hair styling polymers. The amount of the acrylic hair styling polymer in the hair styling composition of the present embodiment is preferably 0.5% by mass or more and less than 10% by mass, preferably 1% by mass or more and less than 7% by mass, and 2% by mass or more and 5% by mass. % is more preferred. When it is 0.5% by mass or more, it is suitable for hair style setting power, and when it is less than 10% by mass, it becomes easy to sufficiently remove the acrylic hair styling polymer by washing.

Examples of the acrylic hair styling polymer include an anionic acrylic polymer having acrylic acid or methacrylic acid as a constituent monomer.

Examples of the anionic acrylic polymer include (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP, (acrylates/diacetone acrylamide) copolymer, and (acrylates/diacetone acrylamide) copolymer. (Acrylates/Alkyl (C1-18) acrylate/Alkyl (C1-8) acrylamide) copolymer AMP is excellent in hot water removal by blending polyoxyethylene sorbitol tetraoleate, and has water resistance. Since it is excellent, it can be expected to suppress the deterioration of hair styling durability due to changes in humidity. The hair styling composition of the present embodiment preferably contains one or more anionic acrylic polymers. 5% by mass or more and less than 10% by mass is preferable, 1% by mass or more and less than 7% by mass is preferable, and 2% by mass or more and less than 5% by mass is more preferable. When it is 0.5% by mass or more, it is suitable for setting power to harden the hairstyle, and when it is less than 10% by mass, it becomes easy to sufficiently remove the acrylic hair styling polymer by washing.

(castor oil and/or liquid fatty acids)
Liquid fatty acids such as castor oil and isostearic acid, or castor oil and isostearic acid are blended in the hair styling composition of the present embodiment. Blending castor oil and/or liquid fatty acid improves hair styling several minutes after application of the hair styling composition of the present embodiment. That is, when hair is styled using a hair styling composition containing a hair styling component mainly composed of an acrylic hair styling polymer, the hair styling property tends to decrease significantly as the composition dries. It can be suppressed by blending castor oil and isostearic acid, or isostearic acid. Further, if castor oil is blended (without isostearic acid), it is possible to suppress the stickiness after application and the deterioration of finger combing of the hair after application, which tend to occur along with the improvement in hair styling properties after several minutes.

When castor oil and/or isostearic acid are added to the hair styling composition of the present embodiment, the amount of castor oil and isostearic acid is, for example, 2% by mass or more and less than 8% by mass.

(optional raw material)
As described above, the hair styling composition of the present embodiment may optionally contain raw materials blended in known hair styling compositions. The optional raw materials include ethanol, hair styling polymers other than acrylic hair styling polymers, nonionic surfactants, fats and oils other than castor oil, ester oils, higher alcohols, polyhydric alcohols, perfumes, and UV absorbers.

Ethanol is suitable as a solvent for acrylic hair styling polymers. When ethanol is blended with the hair styling composition of the present embodiment, the blending amount is, for example, 65% by mass or more and less than 95% by mass.

Polyoxyethylene sorbitol tetraoleate enhances removal efficiency when hot water removes acrylic hair styling polymers after hair styling. The ester is a known tetraester of oleic acid and sorbitol obtained by addition polymerization of ethylene oxide.

One or two or more polyoxyethylene sorbitol tetraoleic acid esters are blended in the hair styling composition of the present embodiment. The blending amount of polyoxyethylene sorbitol tetraoleate in the hair styling composition of the present embodiment is preferably 0.1% by mass or more and less than 5% by mass, and preferably 0.5% by mass or more and less than 3% by mass. When it is 0.1% by mass or more, it is preferable for hot water removal of the acrylic hair styling polymer, and when it is less than 5% by mass, it is suitable for suppressing a decrease in setting power.

The above-mentioned polyoxyethylene sorbitol tetraoleic acid ester preferably has an average added mole number of ethylene oxide of 25 or more and 75 or less, preferably 35 or more and 65 or less. When it is 25 or more, it is preferable for hot water removal of the acrylic hair styling polymer, and when it is 75 or less, it is suitable for suppressing a decrease in setting power.

Examples of the polyoxyethylene sorbitol tetraoleate include Sorbeth-30 tetraoleate, Solbeth-40 tetraoleate, and Solbeth-60 tetraoleate.

(dosage form)
The dosage form of the hair styling composition of the present embodiment is preferably liquid. When it is liquid, it is suitable as a dosage form for application to hair by spraying. In the case of a liquid dosage form, the viscosity after 60 seconds measured at 25° C. using a Brookfield viscometer is, for example, 100 mPa·s or less.

(how to use)
When using the hair styling composition of the present embodiment, it is sprayed and applied to the hair. In this application, it is preferable to make the hair styling composition of the present embodiment into a liquid stock solution, and to spray from an aerosol container filled with this stock solution and a propellant. In the filling described above, the mass ratio of the stock solution to the propellant is, for example, stock solution:propellant=40:60 to 80:20.

In the above filling, the propellant may be a known one, such as propane and n-butane (normal butane), propane and i-butane (isobutane), or a combination gas such as propane, n-butane and i-butane. liquefied petroleum gas (LPG); dimethyl ether (DME); When LPG and DME are used together, the mass ratio is, for example, LPG:DME=5:95 to 90:10.

EXAMPLES The present invention will be described in detail below based on examples, but the present invention is not limitedly interpreted based on the description of these examples.
Hair styling compositions of Examples and Comparative Examples were produced and evaluated. Details are as follows.

(Examples 1-2, Comparative Examples 1-4)
The liquid hair styling compositions of Examples 1-2 and Comparative Examples 1-4 were mixed with (alkyl acrylate/diacetone acrylamide) copolymer AMP, castor oil, persic oil, isostearic acid, 2-octyldodecanol, 2-palmitic acid. It was prepared by combining ingredients selected from ethylhexyl, sorbeth-60 tetraoleate, and ethanol. The blending amounts at this time are as shown in Table 1 below.

(Evaluation: hair styling several minutes after spraying, stickiness suppression immediately after spraying, finger combing immediately after spraying)
The hair styling compositions of Examples 1 to 2 and Comparative Examples 1 to 4, which are stock solutions, and the propellant having a mass ratio of LPG:DME = 20:80 were mixed at a mass ratio of stock solution: propellant = 6:4. Filled into an aerosol container. From this aerosol container, any one of the hair styling compositions of Examples 1 to 2 and Comparative Examples 1 to 4 was sprayed onto the hair implanted on the head mannequin, and the "hair styling properties several minutes after spraying", "Suppression of stickiness immediately after spraying" and "finger combability immediately after spraying" were evaluated. In the evaluation of "hair styling several minutes after spraying", it was evaluated whether the intended hair styling was possible 2 to 3 minutes after spraying. In the evaluation of "Suppression of stickiness immediately after spraying", it was evaluated whether the sticky feel of the hair immediately after spraying was suppressed. In the evaluation of "finger combability immediately after spraying", it was evaluated whether or not the hair was smooth to comb with fingers immediately after spraying. The number of evaluators and evaluation criteria in the above evaluation were as follows.

Number of raters:
Example 1, Comparative Examples 1-3: 5 people Comparative Examples 4-5: 2 people

Evaluation criteria:
For 5 evaluators:
○ Compared to the standard, 3 or more people are good.
- Comparable for 3 or more people compared to the criteria.
Poor compared to the standard by 3 or more persons.
For 2 evaluators:
○ Compared to the standard, 2 people are good.
- Compared to the baseline, 2 people are equivalent.
x: 2 people are bad compared to the standard.

Table 1 below shows the stock solution composition and the propellant composition together with the evaluation results.

As shown in Table 1 above, Examples 1 and 2, in which castor oil or isostearic acid was blended, were evaluated as excellent in "hair styling several minutes after spraying". This evaluation means that the hair can be styled for a long time. In addition, with respect to "suppression of stickiness immediately after spraying" and "finger combability immediately after spraying", Example 1 containing castor oil was evaluated to be equivalent to the standard, unlike Example 2 containing isostearic acid. .

Separately from the above examples and comparative examples, hair styling compositions of reference examples were produced, and films formed from these compositions were dissolved in water (temperature: 30°C or less) and hot water (temperature: about 40°C). A sex test was conducted. Details are as follows.

(Reference Examples 1a-1b, Reference Examples 2a-2f, Reference Examples 3a-3b)
The liquid hair styling compositions of Reference Examples 1a-1b, Reference Examples 2a-2f, and Reference Examples 3a-3b were mixed with (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP, (acrylic Acid Alkyl/Diacetone Acrylamide) Copolymer AMP, Solveth-60 Tetraoleate, Solveth-30 Tetraoleate, Polyoxyethylene Sorbitan Monooleate (20 E.O.), Polyoxyethylene Hydrogenated Castor Oil (40 E.O.) , polyoxyethylene hydrogenated castor oil (60 E.O.), and ethanol. The blending amounts at this time are as shown in Tables 2 to 4 below.

(Water immersion test of film formed with hair styling composition)
1 g of any one of the hair styling compositions of Reference Examples colored with Red No. 227 dye was dropped onto a slide glass having a length of about 7.5 cm and a width of about 2.5 cm, and spread on the surface of the glass. Next, the slide glass was left in a constant temperature bath set at a temperature of 50° C. to form a film of the hair styling composition. Then, a portion of the slide glass was immersed in water for 30 seconds, and the film of the hair styling composition about 1 minute after the immersion was visually confirmed.

(Immersion test in warm water of film formed with hair styling composition)
The hair styling composition was visually checked in the same manner as in the above-described "water immersion test of the film formed by the hair styling composition" except that the water was changed to warm water of about 40°C.

Tables 2 to 4 below show the results of the immersion test along with the components and amounts blended in the hair styling compositions of Reference Examples. The "evaluation" items in Tables 1 to 3 are evaluated as "○" when the removal of the hair styling composition film is progressing compared to the reference, and as "-" when it is equivalent. is shown.

As shown in Table 2 above, when immersed in water, the state of the film formed from the hair styling composition of Reference Examples 1a and 1b depends on the presence or absence of polyoxyethylene sorbitol tetraoleate (sorbeth-60 tetraoleate). No difference was observed. On the other hand, when the hair was immersed in warm water, peeling was observed only in the film formed with the hair styling composition of Reference Example 1a. In other words, it can be said that the inclusion of polyoxyethylene sorbitol tetraoleate increased the hot water removal efficiency of the hair styling composition.

As shown in Table 3 above, peeling was observed only in the films formed from the hair styling compositions of Reference Examples 2a and 2b. In other words, it can be said that the inclusion of polyoxyethylene sorbitol tetraoleate increased the hot water removal efficiency of the hair styling composition. Further, when comparing Reference Example 2a and Reference Example 2b, peeling of the film of Reference Example 2a progressed. Therefore, it can be said that the hot water removal efficiency of the hair styling composition increases as the average added mole number of ethylene oxide in the polyoxyethylene sorbitol tetraoleate increases.

As shown in Table 4 above, when immersed in water, the state of the film formed by the hair styling composition of Reference Examples 3a and 3b depends on the presence or absence of polyoxyethylene sorbitol tetraoleate (Sorbeth-60 tetraoleate). No difference was observed. On the other hand, when the hair was immersed in warm water, the film formed from the hair styling composition of Reference Example 3a was less colored. In other words, it can be said that the inclusion of polyoxyethylene sorbitol tetraoleate increased the hot water removal efficiency of the hair styling composition.

Incidentally, when comparing Reference Example 1a in Table 2 with Reference Example 3a in Table 4, in Reference Example 1a in which (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP was blended, No peeling of the film was observed, and peeling of the film was observed in Reference Example 3a containing the (acrylates/diacetone acrylamide) copolymer AMP. This indicates that when the (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP is blended with the acrylic hair styling polymer, the water resistance is excellent.

Claims (5)

A hair styling composition for spraying hair and styling the hair after spraying,
A hair styling composition comprising an acrylic hair styling polymer , castor oil and a liquid fatty acid. A hair styling composition for spraying hair and styling the hair after spraying,
Acrylic hair styling polymer and castor oil or castor oil and liquid fatty acid are blended,
A hair styling composition containing an anionic acrylic polymer as the acrylic hair styling polymer. A hair styling composition for spraying hair and styling the hair after spraying,
Acrylic hair styling polymer and castor oil or castor oil and liquid fatty acid are blended,
A hair styling composition further containing polyoxyethylene sorbitol tetraoleate. The acrylic hair styling polymer includes (acrylates/alkyl (C1-18) acrylate/alkyl (C1-8) acrylamide) copolymer AMP, (acrylates/diacetone acrylamide) copolymer, and (acrylates/diacetone acrylamide) copolymer. 4. The hair styling composition according to any one of claims 1 to 3, wherein one or more selected from AMPs are blended. A hair styling method comprising: spraying the hair styling composition according to any one of claims 1 to 4 onto hair; and styling the hair after spraying.