JP7393787B2 - Hair cosmetic composition - Google Patents

Description

The present invention relates to a hair cosmetic composition.

Conventionally, many hair cosmetic compositions for imparting flexibility and manageability to hair have been provided as finishing agents for hair after washing.

Among them, hair cosmetic compositions such as hair rinses, hair treatments, hair packs, hair masks, and multi-component hair treatments are widely used to care for hair after washing. The most common method of applying these hair cosmetic compositions is to wash the hair in a bathroom or the like, and then rinsing it off. known to be different. In order to obtain higher effects from these hair cosmetic compositions, it is necessary to devise ways to ensure that the ingredients in the hair cosmetic compositions used remain in the hair even after washing, thereby sustaining the effects. becomes important.

In recent years, as awareness of hair care has increased, changes in hair quality have occurred due to hair treatments such as curling irons, chemical treatments such as permanent waving and hair coloring using permanent hair dyes, friction caused by brushing, and damage caused by external factors such as ultraviolet rays. There is a growing demand in the market for care not only for hair care, but also for changes in hair quality caused by the user's own internal factors, such as aging.

Changes in hair quality caused by damage caused by external factors tend to cause the proteins present in the hair to denature, swell, and flow out more easily, resulting in not only poor texture such as squeaking, stiffness, and tangles, but also dryness of the hair. It is known to cause a decrease in stickiness, firmness, spread, and volume.

It is known that changes in hair quality due to internal factors include thinning of the hair, resulting in a decrease in elasticity and volume, and an increase in curly hair, causing stiffness, tangles, and spread. Furthermore, if a user who has already experienced these changes in hair quality undergoes permanent waving or hair coloring using an oxidative hair dye, there is a risk that the hair quality will further deteriorate.

Among these changes in hair quality, many users are particularly troubled by problems such as loss of hair volume, dryness, spread, and loss of elasticity, which can be caused by both external and internal factors. Since the problems caused by these changes in hair can greatly affect the impression of appearance, there are many requests for improvement, and hair cosmetic compositions have been extensively studied.

Conventionally, methods of using high polymerization silicones and low polymerization silicones in combination, methods of using sugars, etc. have been known to combat dryness and spread of hair (Patent Documents 1 and 2).

Furthermore, as a method for improving the volume and firmness of hair, methods using cationic polymers or amphoteric polymers are known (Patent Documents 3 and 4).

As a treatment, it blends into the hair when applied, thickens the hair when applied, maintains the thickness until rinsing, provides smooth fingering when towel-dried, and gives a moist and voluminous feel after drying. A hair cosmetic containing a cationic surfactant, cationized guar gum, and hydrogenated polyisobutene having a number average molecular weight of 150 to 3000 is disclosed (Patent Document 5).

Japanese Patent Application Publication No. 2005-179337 Japanese Patent Application Publication No. 2010-077079 JP2011-098927A JP2017-206483A JP2019-167307A

When using the highly polymerized silicone shown in Patent Document 1 to improve the dryness and spread of hair, it has a strong coating power, so although it is highly effective in improving the dryness and spread of hair, it does not give a sense of volume or stiffness. There were times when it was missing.

In addition, with the technology using sugars shown in Patent Document 2, if the amount added is small, it cannot be said that the effect on hair is sufficient, and if the amount added is increased to obtain a sufficient effect, strong stickiness may occur. was there.

When using the amphoteric or cationic polymer shown in Patent Document 3 and Patent Document 4 to improve the volume and firmness of the hair, repeated use of the hair cosmetic composition may cause the amphoteric or cationic polymer to form in the hair. As it gradually adsorbs to the hair, it gradually makes the hair stiff, which may cause it to become dry and spread out.

In this way, improvements in dryness and spread and improvements in volume and firmness are inherently contradictory indicators, so it is difficult to fully achieve both effects, and there is still room for improvement.

For this reason, when using a hair cosmetic composition, it improves the dryness and spread of the hair, improves the sense of volume and elasticity, and gives the hair a moisturized feeling while increasing the sense of volume at the roots and the ends of the hair. There has been a need for further development of a hair cosmetic composition that has good cohesion and maintains a sense of volume at the roots and cohesion at the ends.

As a result of intensive studies to solve the above problems, the present inventors found that (A) 2-ethylhexyl palmitate, isopropyl myristate, isopropyl palmitate, palmyl (caprylic acid/capric acid) palmate or tri(caprylic/capric acid) one or more selected from glyceryl; (B) one or more selected from aminopropyl dimethicone or aminoethylaminopropylmethylsiloxane/dimethylsiloxane copolymer; (C) selected from polyvinylpyrrolidone or vinyl acetate/vinylpyrrolidone copolymer. The content of the component (A) is 2 to 5% by mass, the content of the component (B) is 0.03 to 0.1% by mass, and the content of the component (C) is 0.03 to 0.1% by mass . By providing a hair cosmetic composition characterized in that the content of the ingredients is 0.3 to 1% by mass , it provides a moist feeling to the hair while giving a good sense of volume at the roots and manageability at the ends. The present invention has been completed by providing a hair cosmetic composition that maintains the voluminous feel at the roots and the cohesiveness of the ends.

According to the present invention, there is provided a hair cosmetic composition that imparts a moist feel to the hair, has good volume at the roots and good cohesiveness at the tips, and maintains the voluminous feel at the roots and cohesion at the tips. By doing so, it is possible to compensate for the lack of volume and firmness caused by changes in hair quality, and improve dryness and spread.

The present invention will be explained in detail below.

The hair cosmetic composition according to the present invention contains (A) an ester oil that is liquid at 25°C. This makes it possible to give the hair a glossy and moist feel.

The ester oil (A) that is liquid at 25°C used in the present invention is not particularly limited, but includes diisopropyl adipate, diisobutyl adipate, bis(2-ethylhexyl) adipate, isopropyl myristate, cetyl octoate, cetyl isooctanoate, Isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, hexyl laurate, oleyl oleate, decyl oleate, triisodecyl myristate, isostearyl myristate, 2-palmitate Examples include ethylhexyl, lauryl lactate, octyldodecyl lactate, isocetyl stearate, isocetyl isostearate, ethylene glycol di-2-ethylhexylate, glyceryl tricaprylate, and neopentyl glycol dicaprate. One or more of these may be selected and contained.

Among the ester oils (A) that are liquid at 25°C used in the present invention, from the viewpoint of finish and ease of fingering, preferred are 2-ethylhexyl palmitate, isopropyl myristate, isopropyl palmitate, (caprylic acid/capric acid) ) Coconut alkyl, tri(caprylic/capric) glyceryl are preferred, and 2-ethylhexyl palmitate is more preferred.

The ester oil (A) that is liquid at 25° C. used in the present invention may be contained in the hair cosmetic composition. The content is preferably 1 to 10% by weight, more preferably 1.5 to 7% by weight, and even more preferably 2 to 5% by weight. (A) If the content of the ester oil, which is liquid at 25° C., is less than 1% by mass, the hair may become dry and may not feel moisturized. (A) If the content of the ester oil, which is liquid at 25° C., exceeds 10% by mass, the hair will become sticky and there is a risk that the hair will not have a voluminous feel at the roots.

The hair cosmetic composition according to the present invention contains (B) an amino-modified silicone. This has the effect of giving the hair a moist feel and making the ends of the hair tame.

The amino-modified silicone (B) used in the present invention is not particularly limited, but includes aminopropyl dimethicone, aminoethylaminopropylmethylsiloxane/dimethylsiloxane copolymer, (aminoethylaminopropylmethicone/dimethicone) copolymer, etc. . One or more types of these may be selected and contained.

Among the amino-modified silicones (B), aminopropyl dimethicone and aminoethylaminopropylmethylsiloxane/dimethylsiloxane copolymer are preferable from the viewpoint of achieving both less stickiness of the hair after washing and more manageable hair ends.

The amino-modified silicone (B) used in the present invention may be contained in a hair cosmetic composition. The content is preferably 0.01 to 0.2% by weight, more preferably 0.01 to 0.15% by weight, and even more preferably 0.03 to 0.1% by weight. (B) When the content of the amino-modified silicone is less than 0.01% by mass, there is a possibility that the ends of the hair will not be sufficiently organized. (B) If the content of the amino-modified silicone exceeds 0.2% by mass, the hair may become sticky and the hair may not be able to be given a sense of volume at the roots.

The hair cosmetic composition according to the present invention contains one or more types of (C) nonionic film-forming resins. This can give a sense of volume to the roots of the hair.

The nonionic film-forming resin (C) used in the present invention is not particularly limited, but includes vinyl acetate/vinylpyrrolidone copolymer, polyvinylpyrrolidone, polyvinylpyrrolidone/vinyl acetate/vinyl propionate terpolymer, Examples include vinyl acetate/N-vinyl-5-methyl-2-oxazoline copolymer. One or more types of these may be selected and contained.

(C) Among the nonionic film-forming resins, polyvinylpyrrolidone and vinyl acetate/vinylpyrrolidone copolymer are preferred from the viewpoint of imparting a particularly voluminous feel to hair.

The content of the nonionic film-forming resin (C) used in the present invention is preferably 0.01 to 1.5% by mass, more preferably 0.1% to 1.5% by mass, and even more preferably, It is 0.3 to 1.5% by mass. (C) When the nonionic film-forming resin is less than 0.01% by mass, the proportion of the nonionic film-forming resin contained in the hair cosmetic composition becomes small and the nonionic film-forming resin is uniformly adhered to the entire hair. , and there is a risk that you will not be able to obtain a sufficient sense of volume. On the other hand, if the content of the nonionic film-forming resin (C) exceeds 1.5% by mass, a large amount of the nonionic film-forming resin will adhere to the hair, which may cause the hair to squeak and feel stiff. be.

The content ratio ((A)+(B))/(C) of (A) ester oil that is liquid at 25°C, (B) amino-modified silicone compound, and (C) nonionic film-forming resin used in the present invention is From the viewpoint of volume and sustainability of hair ends, the number is preferably 3 to 3,500, more preferably 4 to 35, and still more preferably 5 to 12. If the content ratio ((A)+(B))/(C) is less than 3, the hair will feel less moist, and the volume at the roots and the sustainability of the hair ends may be impaired. Furthermore, if the content ratio ((A)+(B))/(C) exceeds 3,500, the sense of volume at the roots decreases, and there is a risk that the volume at the roots and the sustainability of the hair ends may be impaired.

The pH of the hair cosmetic composition according to the present invention is 2.5 to 7.5 at 20°C. Preferably it is 3.0 to 6.0. This can be expected to improve the softness and smoothness of the hair.

From the viewpoint of usability, the viscosity of the hair cosmetic composition according to the present invention is preferably in the range of 3,000 mPa·s to 300,000 mPa·s at 20°C. If the viscosity of the hair cosmetic composition is less than 3,000 mPa·s, the hair cosmetic composition may not be able to remain on the hair, and sufficient conditioning power may not be obtained. On the other hand, if the viscosity exceeds 300,000 mPa·s, it may not blend well with the hair and may be difficult to apply uniformly.

The viscosity of the hair cosmetic composition according to the present invention was determined by filling a sample bottle (Foods 140, manufactured by Daiichi Glass Co., Ltd.) with 120 g and allowing it to stand at 20°C for 24 hours using a B-type viscometer with a helical stand (model: If the viscosity is between 3,000 mPa・s and less than 100,000 mPa・s, use a digital viscometer TVB-10M (manufactured by Toki Sangyo Co., Ltd.) and rotate it for 1 minute at 20°C and 6 rpm using a No. M4 rotor. Measure after If the viscosity is 100,000 mPa·s or more, measure it after rotating it for 1 minute at 20° C. and 3 rpm using a No. M4 rotor.

In addition to the above-mentioned essential components, the hair cosmetic composition of the present invention contains various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., such as other polymer compounds, (A) and (B). ) Oil-based ingredients other than ingredients, surfactants, humectants, thickeners, chelating agents, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, stabilizers, antioxidants, plant extracts, crude drug extracts , vitamins, preservatives, dyes, pigments, powders, pH adjusters, ultraviolet absorbers, antioxidants, fragrances, etc. may be used, and one or more of these may be contained. However, the present invention is not limited to these examples.

The hair cosmetic composition according to the present invention is characterized by changes in hair quality caused by treatments with hair irons etc., chemical treatments such as permanent waving and hair coloring using permanent hair dyes, friction caused by brushing, and damage caused by external factors such as ultraviolet rays. It is useful for use on hair that has lost its elasticity and volume due to changes in hair quality caused by internal factors of the user, such as aging, and has become dry or spread out.

The present invention will be explained in more detail with reference to Examples below. Note that these do not limit the present invention in any way.

In the evaluation test shown in this specification, the ingredients contained in the hair cosmetic composition and their contents were variously changed. All units indicating the content of each component are mass %, and were prepared by a conventional method.

(sensory evaluation)
Regarding the hair cosmetic compositions of Examples 1 to 25 and Comparative Examples 1 to 7, "finished moist feeling", "finished root voluminous feel", "finished hair end clumps", and "finished root volume" A sensory evaluation was conducted by 10 expert panelists using the evaluation items as ``feel and sustainability of hair cohesion''.

All evaluation tests shown in this specification were conducted under 25°C conditions.

<A moisturized finish, a voluminous finish at the roots, and a cohesive finish at the ends>
One expert panelist applied 1 g of the sample to a hair bundle (a hair bundle made from Chinese hair tied with a rubber band and adjusted to 5 g and 20 cm from the rubber band; hereinafter referred to as a hair bundle), left for 5 minutes, and then washed with water. I dried it using a comb with cold air from a hair dryer. After that, 10 professional panelists who did not perform the application process checked the ``moist feeling of the finish'', ``voluminous feel of the finished root'', and ``cohesiveness of the finished hair ends'', and evaluated them as follows, and the average (Rounded to the nearest whole number) was used as the evaluation result.

(Evaluation criteria for "moist feeling of finish")
5 points: The moist feeling of the finish is very good. 4 points: The moist feeling of the finish is good. 3 points: The moist feeling of the finish is somewhat good. 2 points: The moist feeling of the finish is poor. 1 point: The moist feeling of the finish is good. Very moist feeling

(Evaluation criteria for “Volume feeling at the base of the finished product”)
5 points: Very voluminous finish at the root 4 points: Very voluminous finish at the root 3 points: Slightly voluminous finish at the root 2 points: Slightly less voluminous finish at the root 1 point: Very voluminous finish at the root Lack of volume at the roots

(Evaluation criteria for “finished hair ends”)
5 points: The finished ends of the hair have a very good cohesive feeling 4 points: The finished ends of the hair have a cohesive feeling and are good 3 points: The finished hair ends have a slightly cohesive feeling and are good 2 points: The finished hair ends have a cohesive feeling Poor feeling: 1 point: There is no sense of cohesion at all at the end of the finished hair, which is very bad.

<Sustainable volume at the roots and cohesiveness at the ends>
One expert panelist applied 30 g of the sample to a hair testing doll (“Cut Mannequin No. 775N” manufactured by Beaulux Co., Ltd.; hereinafter referred to as the hair testing doll), left it for 5 minutes, and then heated it to 30°C. The sample was rinsed with tap water at a controlled temperature, towel dried, and dried with cold air from a hair dryer while being passed through a comb. After that, the hair test doll was left for 24 hours, and 10 expert panelists who had not applied the hair checked the ``voluminous feeling at the roots and the sustainability of the hair at the ends'' and evaluated them as follows: The average (rounded to the nearest whole number) was used as the evaluation result.

(“Sustainability of volume at the roots and cohesion at the ends” evaluation criteria)
5 points: The hair has a very good sense of volume at the roots and a sense of cohesion at the ends.4 points: The hair has a sense of volume at the roots and a sense of cohesion at the ends.3 points: The hair has a sense of volume at the roots and a sense of cohesion at the ends. 2 points: Good, with a slight sense of cohesion; 1 point: Hair has no volume at the roots and no cohesiveness at the tips; 1 point: Very poor, with no volume at the roots and no cohesiveness at the ends.

(Examples 1 to 11)
In Examples 1 to 11, hair cosmetic compositions containing various types and contents of (A) liquid ester oil at 25° C. were evaluated.

From the results of Examples 1 to 11, good results were obtained even when the type and content of (A) ester oil, which is liquid at 25° C., was varied.

(Examples 12 to 18)
In Examples 12 to 18, hair cosmetic compositions in which the type and content of (B) amino-modified silicone were varied were evaluated.

From the results of Examples 12 to 18, good results were obtained even when the type and content of (B) amino-modified silicone were varied.

(Examples 19 to 25)
In Examples 19 to 25, hair cosmetic compositions in which the type and content of (C) nonionic film-forming resin were varied were evaluated.

From the results of Examples 19 to 25, good results were obtained even when the type and content of (C) nonionic film-forming resin were varied.

(Example 26)
Component content (mass%)
(A) 2-ethylhexyl palmitate 2.500
(B) Aminopropyl dimethicone (10%) *1 0.500
(C) Polyvinylpyrrolidone 0.200
Glycerin 1.750
Ethylene glycol 4.500
1,3-butylene glycol 2.800
Setanol 4.200
Stearyl alcohol 1.800
Stearyltrimethylammonium chloride 1.750
Polyoxyethylene cetyl ether (20E.O.) 0.200
Polyoxyethylene hydrogenated castor oil (200E.O.) 0.040
Glyceryl monostearate 0.100
Liquid paraffin 0.500
Methyl paraoxybenzoate 0.200
Phenoxyethanol 0.010
Citric acid 0.050
Sodium citrate 0.250
Ethanol 0.600
Methyl polysiloxane 6.800
γ-docosalactone 0.010
Turmeric rhizome extract *3 0.010
Fucus extract *4 0.010
Camellia oil 0.100
Jojoba oil *5 0.010
Basic blue 99 0.020
Basic red 51 0.002
HC blue 2 0.001
Fragrance 0.400
Purified water 70.687
Total 100.000
*3 Falcolex Turmeric B (manufactured by Ichimaru Falcos Co., Ltd.)
*4 1,3BG Vegetol Seaweed (manufactured by Eikodo Honten Co., Ltd.)
*5 NIKKOL refined jojoba oil (manufactured by Nikko Chemicals Co., Ltd.)

The hair cosmetic composition of Example 26 had good results in terms of "moist finish", "voluminous finish", "cohesive finish", and "sustainability of voluminous finish at roots and cohesiveness at ends". The results were obtained. The pH at this time was 5.2.

(Example 27)
Component content (mass%)
(A) 2-ethylhexyl palmitate 2.500
(B) Aminopropyl dimethicone (10%) *1 0.500
(C) Polyvinylpyrrolidone 0.200
Glycerin 1.750
Ethylene glycol 4.500
1,3-butylene glycol 2.800
Setanol 4.200
Stearyl alcohol 1.800
Stearyltrimethylammonium chloride 1.750
Polyoxyethylene cetyl ether (20E.O.) 0.200
Polyoxyethylene hydrogenated castor oil (200E.O.) 0.040
Glyceryl monostearate 0.100
Liquid paraffin 0.500
Methyl paraoxybenzoate 0.200
Phenoxyethanol 0.010
Citric acid 0.050
Sodium citrate 0.250
Ethanol 0.600
Methyl polysiloxane 6.800
γ-docosalactone 0.010
Turmeric rhizome extract *3 0.010
Fucus extract *4 0.010
Camellia oil 0.100
Jojoba oil *5 0.010
Basic blue 99 0.045
Basic red 51 0.003
HC blue 2 0.001
Fragrance 0.400
Purified water 70.661
Total 100.000

The hair cosmetic composition of Example 27 had good results in terms of "moist finish", "voluminous finish", "cohesive finish", and "sustainability of voluminous finish at the roots and cohesiveness at the tips". The results were obtained. The pH at this time was 5.2.

(Example 28)
Component content (mass%)
(A) 2-ethylhexyl palmitate 2.50
(B) Aminopropyl dimethicone (10%) *1 0.50
(C) Polyvinylpyrrolidone 0.20
Glycerin 1.75
Ethylene glycol 4.50
1,3-butylene glycol 2.80
Setanol 4.20
Stearyl alcohol 1.80
Stearyltrimethylammonium chloride 1.75
Polyoxyethylene cetyl ether (20E.O.) 0.20
Polyoxyethylene hydrogenated castor oil (200E.O.) 0.04
Glyceryl monostearate 0.10
Liquid paraffin 0.50
Methyl paraoxybenzoate 0.20
Phenoxyethanol 0.01
Citric acid 0.05
Sodium citrate 0.25
Ethanol 0.60
Methyl polysiloxane 6.80
γ-docosalactone 0.01
Turmeric rhizome extract *3 0.01
Fucus extract *4 0.01
Camellia oil 0.10
Jojoba oil *5 0.01
Fragrance 0.40
Purified water 70.71
Total 100.00

The hair cosmetic composition of Example 28 had good results in terms of "moist finish", "voluminous finish", "cohesive finish", and "sustainability of voluminous finish at the roots and cohesiveness at the tips". The results were obtained. The pH at this time was 4.9.

(Example 29)
Component content (mass%)
(A) Coconut alkyl (caprylic acid/capric acid) 2.00
(B) Aminopropyl dimethicone (10%) *1 0.50
(C) Polyvinylpyrrolidone 0.20
Glycerin 1.75
Ethylene glycol 4.50
1,3-butylene glycol 2.80
Setanol 4.20
Stearyl alcohol 1.80
Stearyltrimethylammonium chloride 1.75
Polyoxyethylene cetyl ether (20E.O.) 0.20
Polyoxyethylene hydrogenated castor oil (200E.O.) 0.04
Glyceryl monostearate 0.10
Liquid paraffin 0.50
Methyl paraoxybenzoate 0.20
Phenoxyethanol 0.01
Citric acid 0.05
Sodium citrate 0.25
Ethanol 0.60
Methyl polysiloxane 6.80
γ-docosalactone 0.01
Turmeric rhizome extract *3 0.01
Fucus extract *4 0.01
Camellia oil 0.10
Jojoba oil *5 0.01
Fragrance 0.40
Purified water 71.21
Total 100.00

The hair cosmetic composition of Example 29 had good results in terms of "moist finish", "voluminous finish", "cohesive finish", and "sustainability of voluminous finish at roots and cohesiveness at ends". The results were obtained. The pH at this time was 5.0.

With the present invention, while giving the hair a moisturized feeling, the sense of volume at the roots and the manageability of the ends are good, and the volume at the roots and the manageability of the ends are maintained, resulting in problems that occur with changes in hair quality. It is possible to provide a hair cosmetic composition that compensates for the lack of voluminous feel and firmness, and improves dryness and spread.

Claims (1)

Contains (A) 2-ethylhexyl palmitate (B) aminopropyl dimethicone (C) polyvinylpyrrolidone,
The content of the component (A) is 2 to 5% by mass,
The content of the component (B) is 0.03 to 0.1% by mass,
A hair cosmetic composition in which the content of component (C) is 0.3 to 1% by mass.