JP7504426B2 - Hair dye composition - Google Patents

Description

The present invention relates to a hair dye composition, and in particular to a hair dye composition having good low-temperature stability and cycle stability.

Today, there are several agents for hair coloring, including permanent hair dyes, semi-permanent hair dyes, and temporary hair dyes. Among these, permanent hair dyes and semi-permanent hair dyes are used to dye hair. Permanent hair dyes are made by mixing a first agent containing an alkaline agent and an oxidative dye with a second agent containing an oxidizing agent, and the alkaline agent opens the hair cuticle, causing the oxidative dye to undergo an oxidation reaction inside the hair, resulting in color development. In addition, the oxidizing agent breaks down the melanin in the hair, so hair bleaching can also be performed at the same time. However, although permanent hair dyes have good color retention, they are known to cause damage to hair due to their reaction mechanism.

On the other hand, semi-permanent hair dyes are characterized by the fact that the dye penetrates and is absorbed into the hair, and therefore have the advantage of being less damaging to hair than permanent hair dyes that cause an oxidation reaction inside the hair. For this reason, they are popular among people who want to dye their hair while reducing the burden on their hair, and those who want to use them as a stopgap to prevent fading from being noticeable until the next dye. Examples of semi-permanent hair dyes include color treatments that use basic dyes and hair manicures that use acidic dyes. Color treatments in particular are widely used by many users today, as they allow users to enjoy both hair care and hair dyeing at the same time, just like regular treatments, due to the good compatibility between basic dyes and cationic surfactants.

As such a hair dye composition, a hair dye composition is provided that contains a dye, an aromatic alcohol, a cationic surfactant, a nonionic surfactant, and dimethicone or dimethiconol, and has high hair dyeing power and gives hair softness and a smooth feel (Patent Document 1). Although aromatic alcohols have a negative effect on stability in emulsion systems, the hair dye composition achieves a composition with excellent stability over time.

In addition, a hair dye composition has been disclosed that contains a direct dye, a sulfonated polysaccharide, a monoalkyl (C8-22) quaternary ammonium salt, and a cationic surfactant selected from the group consisting of monoalkyl (C8-22) ether amines, monoalkylamide (C8-22) amines, and salts of these amines, and that by adjusting the charge ratio between the sulfonated polysaccharide and the cationic surfactant, it is difficult for a water-insoluble complex to precipitate, and the composition has excellent formulation stability when stored at high temperatures (Patent Document 2).

The bathroom is one of the places where hair dye compositions are stored and used. Bathrooms are generally cool and dark, and therefore tend to be cold, especially in winter. At these low temperatures, there is a problem of components precipitating from the hair dye composition. In addition, when taking a bath or drying the bathroom or using the bathroom heater, the room temperature becomes warm, and the difference between the room temperature and low temperatures becomes large. This temperature difference causes water droplets to form between the hair dye composition and the container, which causes the problem of damaging the aesthetic appearance of the hair dye composition. Therefore, when considering the actual conditions of use, it is necessary to consider stability over time not only at high temperatures, but also at low temperatures and under repeated temperature changes between low and high temperatures (hereinafter referred to as cyclic conditions).

JP 2012-162466 A JP 2016-193872 A

However, when filled into an open jar container, although the above-mentioned Patent Document 1 has excellent stability at high temperatures, there is room for improvement in stability at low temperatures because higher alcohol precipitates on the surface of the hair dye composition at low temperatures. Also, although the above-mentioned Patent Document 2 has excellent stability at high temperatures, water droplets tend to accumulate on the surface of the hair dye composition under cycle conditions, and the accumulated water droplets tend to cause a mottled pattern on the surface due to the dye in the hair dye composition, which tends to mar the aesthetic appearance of the hair dye composition.

Therefore, the objective of the present invention is to provide a hair dye composition that has good stability over time at low temperatures and under cyclic conditions.

The present inventors have discovered a hair dye composition containing a basic dye,
The inventors have found that by providing a hair dye composition comprising (A) cetyl alcohol, (B) one or more selected from stearyl alcohol and behenyl alcohol, (C) a nonionic surfactant, (D) a cationic surfactant, and (E) an ester oil that is liquid at 25°C, and the average HLB value of component (C) is 16 or more, it is possible to obtain a hair dye composition that has good stability over time at low temperatures and under cyclic conditions, and have thus completed the present invention.

The present invention provides a hair dye composition that has good stability over time at low temperatures and under cyclic conditions.

The present invention will be described in detail below. Note that all units indicating content are mass% unless otherwise specified.

The present invention relates to a hair dye composition containing a basic dye,
The hair dye composition contains (A) cetyl alcohol, (B) one or more selected from stearyl alcohol and behenyl alcohol, (C) a nonionic surfactant, (D) a cationic surfactant, and (E) an ester oil that is liquid at 25°C, and is characterized in that the average HLB value of component (C) is 16 or more.This hair dye composition has good stability over time at low temperatures and under cyclic conditions.

In this specification, low temperature means a temperature of "5°C."

In this specification, high temperature means a temperature of 40°C.

The present invention contains (A) cetyl alcohol from the viewpoint of stability over time at low temperatures.

The content of the component (A) used in the present invention is preferably 2 to 8%, more preferably 3 to 7%. If the content of the component (A) is less than 2% or exceeds 8%, the stability over time at low temperatures may be poor.

From the viewpoint of stability over time at low temperatures, the present invention contains (B) one or more selected from stearyl alcohol and behenyl alcohol.

Among the components (B) used in the present invention, stearyl alcohol is preferred from the viewpoint of improving stability over time at low temperatures.

The content of the (B) component used in the present invention is preferably 1 to 5%, and more preferably 2 to 3%. If the (B) component is less than 1% or exceeds 5%, the stability over time at low temperatures may be poor.

The content ratio (A)/(A+B) of the (A) component and the (B) component used in the present invention is preferably 0.5 to 0.83, and more preferably 0.6 to 0.78, from the viewpoint of stability over time at low temperatures. If the content ratio (A)/(A+B) of the (A) component and the (B) component is less than 0.5 or exceeds 0.83, the stability over time at low temperatures may be deteriorated.

From the viewpoint of emulsion stability, the present invention contains (C) a nonionic surfactant.

The component (C) used in the present invention is not particularly limited, but examples thereof include polyoxyethylene (hereinafter referred to as POE) alkyl ethers, POE alkylphenyl ethers, POE-polyoxypropylene (hereinafter referred to as POP) alkyl ethers, POE fatty acids, POE sorbitan fatty acid esters, POE castor oils, POE hydrogenated castor oils, POE sorbitol tetra fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyglycerin fatty acid esters, N-alkyldimethylamine oxides, POE propylene glycol fatty acid esters, sugar-based nonionic surfactants, etc. The component (C) contains one or more types.

Among the components (C) used in the present invention, POE alkyl ethers are preferred from the viewpoint of stability over time under cycle conditions, and among them, POE (30) behenyl ether and POE (40) cetyl ether are preferred from the viewpoint of improving stability over time under cycle conditions.

The content of the (C) component used in the present invention is preferably 1 to 6%, and more preferably 1.5 to 5%. If the (C) component is less than 1% or exceeds 6%, the stability over time under cycle conditions may be poor.

The average HLB value of the component (C) contained in the hair dye composition of the present invention is preferably 16 or more, and from the viewpoint of improving stability over time under cyclic conditions, is more preferably 16 to 18, and even more preferably 16.3 to 17.2. If the average HLB value is less than 16 or more than 18, there is a risk that stability over time under cyclic conditions will be poor.

In the present invention, "HLB" is an abbreviation for Hydrophile-Lipophile Balance, and is a parameter that indicates the relative strength of hydrophilicity and lipophilicity of a surfactant molecule. The higher the HLB value, the stronger the hydrophilicity, and the lower the HLB value, the stronger the lipophilicity. The HLB value described in this specification is a value calculated using the known Griffin formula, and the average HLB value means the HLB value of the (C) component alone when one type is used. In addition, when two or more types of the (C) components are used in combination, it means the average HLB value of the entire (C) components calculated based on the Griffin formula and the content of each.

The (C) component used in the present invention preferably contains two or more types from the viewpoint of stability over time under cyclic conditions, and further, in order to improve stability over time under cyclic conditions, it is preferable to contain the (C) component having an HLB value of 16 or more.

The present invention contains (D) a cationic surfactant from the viewpoint of stability over time under cycle conditions.

The component (D) used in the present invention is not particularly limited, but examples thereof include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, stearate diethylaminoethylamide, stearate dimethylaminopropylamide, benzalkonium chloride, etc. The component (D) contains one or more types.

Among the components (D) used in the present invention, stearyltrimethylammonium chloride and behenyltrimethylammonium chloride are preferred from the viewpoint of stability over time under cycle conditions.

The content of the (D) component used in the present invention is preferably 0.5 to 6%, more preferably 1 to 6%. If the (D) component is less than 0.5%, the stability over time under cycle conditions may deteriorate. If the (D) component is more than 6%, no further improvement in the stability over time under cycle conditions can be expected.

From the viewpoint of stability over time under cycle conditions, the present invention contains (E) an ester oil that is liquid at 25°C.

The component (E) used in the present invention is not particularly limited, but examples thereof include diisopropyl adipate, diisobutyl adipate, bis(2-ethylhexyl) adipate, isopropyl myristate, cetyl ethylhexanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, and hexyl laurate. , oleyl oleate, decyl oleate, octyldodecyl oleate, oleyl erucate, octyldodecyl erucate, triisodecyl myristate, isostearyl myristate, 2-ethylhexyl palmitate, lauryl lactate, octyldodecyl lactate, isocetyl stearate, isocetyl isostearate, ethylene glycol di-2-ethylhexylate, glyceryl tricaprylate, neopentyl glycol dicaprate, etc. The component (E) contains one or more types.

Among the components (E) used in the present invention, oleyl oleate, ethylhexyl palmitate, and isopropyl myristate are preferred from the viewpoint of stability over time under cycle conditions, and among these, oleyl oleate is more preferred from the viewpoint of improving stability over time under cycle conditions.

The content of the component (E) used in the present invention is preferably 0.5 to 15%, more preferably 1 to 10%. If the content of the component (E) is less than 0.5% or exceeds 15%, the stability over time under cycle conditions may be poor.

The hair dye composition according to the present invention contains a direct dye from the viewpoint of hair dyeing properties.

Direct dyes for use in the present invention include, for example, basic dyes, HC dyes, acid dyes, natural dyes, and disperse dyes. Among these direct dyes, basic dyes and HC dyes are preferred because they are less likely to reduce hair dyeing properties even when used in combination with components that impart treatment properties.

The basic dyes are not particularly limited, but examples include Basic Brown 16, Basic Red 51, Basic Blue 75, Basic Blue 99, Basic Yellow 57, Basic Purple 2, etc. One or more of these may be contained.

HC dyes are not particularly limited, but examples include HC Orange 1, HC Red 1, HC Red 3, HC Blue 2, HC Yellow 2, and HC Yellow 4. These may contain one or more types.

The hair dye composition of the present invention contains a polyhydric alcohol to dissolve the dye.

The polyhydric alcohol is not particularly limited, but examples thereof include dihydric alcohols such as ethylene glycol, 1,3-butylene glycol, and propylene glycol, and trihydric alcohols such as glycerin. One or more of these may be contained.

The hair dye composition according to the present invention may contain, in addition to the components (A), (B) and (E), one or more oily components. Examples include fats and oils, waxes, higher fatty acids and silicone oils.

The oils and fats are not particularly limited, but examples include vegetable oils such as coconut oil, palm oil, olive oil, avocado oil, castor oil, sesame oil, rosehip oil, meadowfoam oil, evening primrose oil, macadamia nut oil, peppermint oil, corn oil, rapeseed oil, rice bran oil, and shea butter. One or more of these may be contained.

The waxes are not particularly limited, but examples include beeswax, candelilla wax, rice bran wax, shellac, carnauba wax, jojoba oil, etc. One or more of these may be contained.

The higher fatty acids are not particularly limited, but examples include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. One or more of these may be contained.

The silicone oils include, but are not limited to, methyl polysiloxane, highly polymerized methyl polysiloxane, methylphenyl polysiloxane, decamethylcyclopentasiloxane, polyether modified silicone, amino modified silicone, betaine modified silicone, alkyl modified silicone, alkoxy modified silicone, etc. One or more of these may be contained.

The hair dye composition according to the present invention may contain, in addition to the above-mentioned components, at least one selected from the following components, as necessary, within the scope of the effect of the present invention: lower alcohols, surfactants, water-soluble thickeners, metal sequestering agents, proteins such as collagen, keratin, elastin, fibroin, conchiolin, soy protein, casein, gelatin, etc.; polypeptides such as hydrolysates obtained by hydrolysis with acids, alkalis, enzymes, etc., and cationic modified proteins obtained by quaternizing these; moisturizing agents such as sodium pyrrolidone carboxylate and hyaluronic acid; preservatives such as parabens; pH adjusters such as citric acid, sodium citrate, sodium dihydrogen phosphate, disodium hydrogen phosphate, and sodium lactate; antioxidants such as thioglycolic acid, sulfites, ascorbic acid, and dibutylhydroxytoluene; amino acids, plant extracts, herbal extracts, vitamins, dyes, fragrances, pigments, and ultraviolet absorbers.

The hair dye composition according to the present invention can be used in the form of a milky lotion or cream, with the cream being preferred from the standpoint of ease of application.

The viscosity of the hair dye composition according to the present invention is preferably 3,000 to 100,000 mPa·s at 20°C, and more preferably 10,000 to 50,000 mPa·s from the viewpoint of application properties.

The viscosity at 20°C according to the present invention was measured by filling a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 120 g of the hair dye composition prepared by the usual method, leaving it to stand at 20°C for 2 days, and then rotating it with a helical stand-equipped B-type viscometer (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) at 25°C and 12 rpm for 1 minute using an M3 rotor if the viscosity was less than 5,000 mPa·s, at 25°C and 12 rpm for 1 minute using an M4 rotor if the viscosity was 5,000 to 50,000 mPa·s, and at 25°C and 6 rpm for 1 minute using an M4 rotor if the viscosity was 50,000 to 100,000 mPa·s.

The pH of the hair dye composition according to the present invention is preferably 4 to 6. If the pH of the hair dye composition is less than 4, the hair dyeing properties may be reduced. If the pH of the hair dye composition is more than 6, the storage stability of the dye may decrease, and the hair dyeing properties may be reduced.

The hair dye composition according to the present invention may be filled in an open container. The open container is not particularly limited, but examples include jar containers, compact containers, bottle containers, and refill containers. Among these, jar containers are preferred from the viewpoint of making it easy to take the hair dye composition into hand.

The material of the open container is not particularly limited, but examples include polyethylene, polypropylene, polystyrene, acrylonitrile-styrene, polyethylene terephthalate, aluminum, stainless steel, and glass. Among these, polyethylene and polypropylene are preferable from the viewpoint of ease of forming the container. The container can be made of one or more types.

The height of the open container is not particularly limited, but from the viewpoint of usability, it is preferably 30 to 80 mm.

The inner diameter of the opening of the open-type container is not particularly limited, but from the viewpoint of usability, it is preferably 55 to 90 mm.

The capacity of the open container is not particularly limited, but from the viewpoint of ease of use, it is preferably 90 to 250 mL.

The amount of hair dye composition to be filled relative to the capacity of the open container is not particularly limited, but from the viewpoints of ease of use and stability over time, it is preferably 70 to 90%.

The present invention will be described in more detail below with reference to examples, but these are not intended to limit the present invention in any way.

In the evaluation tests shown in this specification, the components contained in the hair dye composition and their contents were varied. The units showing the contents of each component are all mass %, and the compositions were prepared using standard methods.

The content of "sodium citrate" in the tables in this specification is described as "amount to give a pH of 5" meaning "amount required to adjust to the indicated pH." Furthermore, the content of "purified water" is described as "balance" meaning "amount required to make the total content of each component 100% by mass."

In the evaluation tests shown in this specification, "stability over time at low temperatures" and "stability over time under cycle conditions" were evaluated using the following methods.

[Stability over time at low temperatures]
In the evaluation test for "temporal stability at low temperatures" shown in this specification, 80 g of a hair dye composition obtained by ordinary preparation was filled into a polypropylene jar (LOOP-100, manufactured by Glacel) and stored at 5°C for 2 weeks, 1 month, and 3 months. After adjusting the temperature to 20°C, the change in the appearance of the surface of the hair dye composition was visually confirmed and evaluated according to the following criteria. "There is a difference in the appearance of the surface of the hair dye composition" at low temperatures means that the entire hair dye composition has changed color to a pearl-like state or that crystals have precipitated on the surface.
<Evaluation criteria for stability over time at low temperatures>
⊚: There is no difference in the appearance of the surface of the hair dye composition before and after storage for three months or more.
Good: One month or more but less than three months, there is no difference in the appearance of the surface of the hair dye composition before and after storage.
Δ: Two weeks or more but less than one month, there is no difference in the appearance of the surface of the hair dye composition before and after storage.
×: Less than 2 weeks, there is a difference in appearance of the surface of the hair dye composition before and after storage.

[Stability over time under cycling conditions]
In the evaluation test for "temporal stability under cyclic conditions" shown in the present specification, 80 g of a hair dye composition prepared by a conventional method was filled into a polypropylene jar (LOOP-100, manufactured by Glacel), and stored in an incubator set to a 24-hour cycle of 5°C to 40°C for 2 weeks, 1 month, and 3 months. After adjusting the temperature to 20°C, the change in the appearance of the surface of the hair dye composition was visually confirmed and evaluated according to the following criteria. Under cyclic conditions, "there is a difference in the appearance of the surface of the hair dye composition" refers to a state in which water droplets that have evaporated from the surface of the hair dye composition and accumulated on the hair dye composition due to condensation appear on the surface as a mottled pattern caused by the dye in the hair dye composition.
<Evaluation criteria for temporal stability under cycle conditions from 5° C. to 40° C.>
⊚: There is no difference in the appearance of the surface of the hair dye composition before and after storage for three months or more.
Good: One month or more but less than three months, there is no difference in the appearance of the surface of the hair dye composition before and after storage.
Δ: Two weeks or more but less than one month, there is no difference in the appearance of the surface of the hair dye composition before and after storage.
×: Less than 2 weeks, there is a difference in appearance of the surface of the hair dye composition before and after storage.

From Examples 1 to 10 shown in Table 1, it was confirmed that good results were obtained in terms of "stability over time at low temperatures" and "stability over time under cycle conditions."

Examples 11 to 19 shown in Table 2 confirmed that good results were obtained for "stability over time at low temperatures" and "stability over time under cycle conditions."

Examples 20 to 24 shown in Table 3 confirmed that good results were obtained for "stability over time at low temperatures" and "stability over time under cycle conditions."

Examples 25 to 30 shown in Table 4 confirmed that good results were obtained for "stability over time at low temperatures" and "stability over time under cycle conditions."

The following are examples of hair dye composition formulations. For Examples 31 to 34, good results were obtained for "stability over time at low temperatures" and "stability over time under cyclic conditions."

Example 31
Ingredient Content (mass%)
(A) Cetyl alcohol 5.00
(B) Stearyl alcohol 2.00
(C) POE (30) behenyl ether 1.60
(C) POE (40) cetyl ether 2.40
(D) Stearyltrimethylammonium chloride 0.70
(D) Behenyltrimethylammonium chloride 1.30
(E) Oleyl oleate 2.00
Dimer dilinoleic acid hydrogenated castor oil 1.00
Methylpolysiloxane 7.00
Dimethiconol 0.25
1,3-butylene glycol 3.00
Ethylene glycol 8.00
Glycerin 1.00
Methyl parahydroxybenzoate 0.20
Chloride O-[2-hydroxy-3-
(Trimethylammonio)propyl]guar gum 0.30
Citric acid 0.03
Sodium citrate 0.09
Squalane 0.10
Jojoba oil 0.10
Macadamia nut oil 0.10
Basic Yellow 57 0.60
Basic Blue 99 0.10
Purified water 63.13
Total 100.00

Example 32
Ingredient Content (mass%)
(A) Cetyl alcohol 4.00
(B) Stearyl alcohol 2.00
(C) POE (30) behenyl ether 0.60
(C) POE (40) cetyl ether 0.90
(D) Stearyltrimethylammonium chloride 0.70
(D) Behenyltrimethylammonium chloride 1.30
(E) Oleyl oleate 4.00
Dimer dilinoleic acid hydrogenated castor oil 1.00
Methylpolysiloxane 7.00
Dimethiconol 0.25
1,3-butylene glycol 3.00
Ethylene glycol 8.00
Glycerin 1.00
Methyl parahydroxybenzoate 0.20
Chloride O-[2-hydroxy-3-
(Trimethylammonio)propyl]guar gum 0.30
Citric acid 0.03
Sodium citrate 0.19
Squalane 0.10
Jojoba oil 0.10
Macadamia nut oil 0.10
Basic Brown 16 0.10
Basic Blue 99 0.40
Purified water 64.73
Total 100.00

Example 33
Ingredient Content (mass%)
(A) Cetyl alcohol 5.00
(B) Stearyl alcohol 4.00
(C) POE (30) Behenyl ether 2.00
(C) POE (40) cetyl ether 3.00
(D) Stearyltrimethylammonium chloride 2.00
(D) Behenyltrimethylammonium chloride 1.00
(E) Oleyl oleate 3.00
(E) Isopropyl myristate 2.00
Shea butter 2.00
1,3-butylene glycol 3.00
Ethylene glycol 8.00
Glycerin 1.00
Methyl parahydroxybenzoate 0.20
Chloride O-[2-hydroxy-3-
(Trimethylammonio)propyl]guar gum 0.20
Citric acid 0.03
Sodium citrate 0.15
Squalane 0.10
Jojoba oil 0.10
Macadamia nut oil 0.10
Basic Yellow 57 0.05
Basic Blue 99 0.25
Purified water 57.32
Total 100.00

Example 34
Ingredient Content (mass%)
(A) Cetyl alcohol 3.50
(B) Stearyl alcohol 1.50
(C) POE (30) Behenyl ether 0.30
(C) POE (40) cetyl ether 0.70
(D) Stearyltrimethylammonium chloride 1.80
(E) Ethylhexyl palmitate 5.00
Methylpolysiloxane 5.00
1,3-butylene glycol 3.00
Ethylene glycol 5.00
Methyl parahydroxybenzoate 0.20
Citric acid 0.02
Sodium citrate 0.15
Camellia oil 0.10
Jojoba oil 0.10
Royal jelly extract 0.10
Seaweed extract 0.10
Hyaluronic acid 0.10
Basic Purple 2 0.03
Basic Blue 75 0.01
Purified water 73.29
Total 100.00

The present invention makes it possible to obtain a hair dye composition that has good stability over time at low temperatures and under cyclic conditions.

Claims (2)

A hair dye composition containing a basic dye,
(A) cetyl alcohol; (B) one or more selected from stearyl alcohol and behenyl alcohol; (C) two or more polyoxyethylene alkyl ethers.
(D) Cationic surfactant (E) One or more selected from oleyl oleate, ethylhexyl palmitate, and isopropyl myristate
a content of the component (A) of 2 to 8% by mass, a content of the component (B) of 1 to 5% by mass, a content of the component (C) of 1 to 6% by mass, a content of the component (D) of 0.5 to 6% by mass, and a content of the component (E) of 0.5 to 15% by mass, a content ratio of the component (A) to the component (B), (A)/(A+B), of 0.5 to 0.83, and an average HLB value of the component (C) of 16.3 to 17.2. 2. The hair dye composition according to claim 1 , wherein the component (E) is oleyl oleate.