JPH10316539A - Two layer type hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a two layer type hair cosmetic good in hair feeling after use, capable of imparting flexibility and luster to the hair to provide the soft hair, good in separation of the two layers, and good in stability after the passage of time. SOLUTION: This two layer type hair cosmetic comprises (A) 0.1-40 wt.% hydrocarbon oil being liquid at a normal temperature, (B) 0.01-10 wt.% nonionic surfactant being liquid at the normal temperature, and having >=10 HLB, (C) 0.001-5 wt.% cationized cellulose, and (D) purified water, and is formed out of an upper, emulsified layer, and a lower water layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-layer hair cosmetic, and more particularly, to a two-layer hair cosmetic which imparts good feel to the hair after use, imparts flexibility and luster to the hair, and gives a supple hair. The present invention relates to a two-layer hair cosmetic composition having a good separation of the composition and good stability with time.

[0002]

2. Description of the Related Art Hair creams, hair lotions, hair mousses, and the like are generally used as hair cosmetics of the treatment type. Hair creams have a characteristic that gives them a calm and glossy finish when processed into hair because they contain a lot of oil, while hair lotions contain a lot of moisture, giving a fresh and light finish when processed into hair. have. Hair mousse is obtained by foaming a hair cream or a hair lotion to improve usability. These hair cosmetics
They have been used differently depending on the intended use.
On the other hand, two-layer hair cosmetics that combine these advantages have been developed, but most of the conventional two-layer hair cosmetics consist of an upper layer consisting of an oil layer and a lower layer consisting of an aqueous layer. .

[0003]

However, in the case of a two-layer type hair cosmetic comprising an oil layer as an upper layer and an aqueous layer as a lower layer, the hair layer and the aqueous layer are dispersed even when shaking at the time of use. In most cases, the properties of the oil agent were directly increased, and the oil film had a strong oily film feeling, became hard and heavy, and lacked flexibility as compared with a hair cream.
As a means of improving this, a two-layer hair cosmetic in which the upper oil layer is an emulsified layer and the lower layer is an aqueous layer has been studied,
There was a problem that the separation of the emulsified layer and the aqueous layer was not good and the layer became one layer, and the oil agent separated over time. Therefore, it is composed of an emulsified layer and an aqueous layer in which the oil agent is stably emulsified, and when used, it becomes a uniform emulsified layer by shaking. The development of a layered hair cosmetic has been desired.

[0004]

In view of such circumstances, the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that hydrocarbon oil which is liquid at room temperature, a specific nonionic surfactant, and purified water. By blending cationized cellulose with a two-layer hair cosmetic containing, a good feel of the hair after use, imparting flexibility and gloss to the hair to give a supple hair, an emulsifying layer and water The present inventors have found that a two-layer hair cosmetic composition having good layer separation and good stability over time can be obtained, and has completed the present invention. That is, the present invention provides (A) a hydrocarbon oil that is liquid at ordinary temperature 0.1 to 40% by weight (B) a nonionic surfactant that is liquid at ordinary temperature and has an HLB of 10 or more 0.01 to 10% by weight % (C) cationized cellulose 0.001 to 5% by weight (D) purified water, wherein the upper layer comprises an emulsified layer and the lower layer comprises an aqueous layer. The normal temperature in the present invention refers to a temperature range of 15 to 25 ° C (Japanese Pharmacopoeia, 12th revision, general rules).

[0005]

DETAILED DESCRIPTION OF THE INVENTION The hydrocarbon oil of the component (A) used in the present invention is not particularly limited as long as it is a liquid hydrocarbon oil at room temperature. Examples thereof include liquid paraffin, squalane,
Squalene and isoparaffin are preferred.

In the present invention, the component (A), which is a liquid at room temperature, may be used alone or in combination of two or more, if necessary. 0.1 to 40% by weight (hereinafter, the weight% is simply referred to as%), and more preferably 1 to 20%. If it is less than 0.1%, the effect of imparting good flexibility and luster after use cannot be obtained, and if it is more than 40%, the quality of the hair treatment product such as heavy and sticky hair finish is impaired. There are cases.

The nonionic surfactant (B) used in the present invention is not particularly limited as long as it is a liquid at room temperature and has an HLB of 10 or more.
For example, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan tetraoleate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbitan monolaurate, polyoxyethylene glyceryl monoisostearate, trioxyethylene glyceryl triisoate Polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl trioleate, hexaglyceryl monolaurate, decaglyceryl monolaurate, decaglyceryl monooleate, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl Ether, polyethylene glycol monooleate, polyethylene glycol monoisostearate Calls, those selected from polyoxyethylene castor oil, and the like. Among these, more preferred are polyoxyethylene sorbitan monooleate and polyoxyethylene glyceryl monoisostearate, and polyoxyethylene monooleate (6EO) sorbitan, polyoxyethylene monooleate (20E) .O.) Sorbitan, polyoxyethylene monoisostearate (10EO) glyceryl, polyoxyethylene monoisostearate (20EO) glyceryl, polyoxyethylene monoisostearate (25EO) glyceryl and the like. Are exemplified.

In the present invention, the nonionic surfactant (B) may be used alone or in combination of two or more, if necessary.
10%, more preferably 0.1% to 5%. If it is less than 0.01%, it is difficult to obtain the temporal stability of the emulsified layer of the two-layer hair cosmetic, and if it is more than 10%, it takes time to separate the two layers, and the finish of the hair is heavy. Stickiness may impair the quality of the hair treatment product.

The cationized cellulose of the component (C) used in the present invention has good affinity and adsorptivity to hair, has a function of imparting smoothness and softness to hair, and has a function of stabilizing an emulsifying system. What is used. In the present invention, the component (C) is blended for improving the feel and stabilizing the emulsified layer of the two-layer hair cosmetic. The cationized cellulose of the component (C) used in the present invention is not particularly limited, but is preferably a chlorinated O- [2-
Hydroxy-3- (trimethylammonio) propyl]
Hydroxyethyl cellulose (for example, as a commercial product,
Union Carbide polymer JR400), chloride O
-[2-hydroxy-3- (lauryldimethylammonio) propyl] hydroxyethylcellulose (for example,
As a commercial product, quarterly soft LM manufactured by Amacol
-200).

In the present invention, the cationized cellulose of the component (C) may be used alone or in combination of two or more, if necessary.
It is from 0.01 to 5%, and more preferably from 0.01 to 3%. If it is less than 0.001%, it is difficult to obtain the stability over time of the two-layer hair cosmetic, and if it is more than 5%, the quality of the hair treatment product may be impaired such as hardening of the finish of the hair. Yes.

In the present invention, the purified water of the component (D) is
An essential component in a two-layer dosage form where the upper layer is an emulsified layer and the lower layer is an aqueous layer

[0012] The two-layer hair cosmetic composition of the present invention becomes a uniform emulsified layer as a whole when shaken gently.
It is characterized by being divided into two layers, an emulsified layer and an aqueous layer, within 12 hours and stable over time.

The two-layered hair cosmetic composition of the present invention contains, in addition to the above essential components, silicone oil, cyclic silicone and polyether modified within a quantitative and qualitative range according to the purpose, without impairing the effects of the present invention. Silicone derivatives such as silicone, amino-modified silicone and cationic silicone; oily components such as ester oils, fats and oils, higher alcohols and higher fatty acids; aqueous components such as polyhydric alcohols and lower alcohols; cationic, nonionic, amphoteric and anionic General-purpose components in hair products, such as a high molecular weight compound for hair; a thickener such as a water-soluble polymer; a cationic, amphoteric, or anionic surfactant can be blended. In addition, fragrances, preservatives,
Oil-based or water-based UV inhibitors, PH regulators, chelating agents, antioxidants, bactericides, cosmetic ingredients, and other ingredients that are usually blended in cosmetics also do not impair the effects of the present invention,
It can be blended in a qualitative range.

The two-layer hair cosmetic of the present invention can be used as a hair product such as a hair rinse, a hair treatment, a hair lotion and the like. Can be used for any of the above.

[0015]

The present invention will be further described with reference to the following examples. These do not limit the present invention at all.

Examples 1 to 6 and Comparative Examples 1 to 7 Double-layered hair treatment A double-layered hair treatment was prepared according to the composition shown in Table 1 and by the following method. Was evaluated for weight, stickiness), flexibility, gloss, stability over time, and easiness to form two layers. Table 2 shows the results.

[0017]

[Table 1] (Note 1) Polymer JR-40 manufactured by Union Carbide
0

(Preparation method) A: Components (1) to (5) are heated and dissolved. B: The components (6) to (16) and the component (18) are heated and dissolved. C: Add A to B and emulsify. D: After cooling C and adding the component (17), the mixture was uniformly mixed to obtain a two-layer hair treatment.

(Evaluation method for feeling of use) A plurality of human hair wigs (wigs) were prepared, each of them was treated with a commercially available shampoo and rinse of a normal type, dried, and one of the blanks was used as a blank. Were applied with the two-layer hair treatments of Examples 1 to 6 and Comparative Examples 1 to 7 and left for 5 minutes to obtain evaluation samples. These samples were evaluated by five expert evaluators for the feel (finish weight, stickiness), flexibility, and gloss of the hair using (a) absolute evaluation criteria, and the average of the scores of each sample was evaluated. The value was determined using a (b) 4-step criterion. (A) Absolute evaluation criteria (Evaluation) (Content) 3 points: very good compared to blank 2 points: good compared to blank 1 point: slightly good compared to blank 0 point: good to blank (B) 4-step judgment criteria (average evaluation value) (Judgment) 2.5 points or more: 1.5 points or more, less than 2.5 points: ○ 0.5 points Above, less than 1.5 points: △ Less than 0.5 point: ×

(Evaluation method of stability over time) The two-layer hair treatments of Examples 1 to 6 and Comparative Examples 1 to 7 were placed in a constant temperature bath at 50 ° C. and 5 ° C., and the state of the bulk after 2 weeks had passed. Observed. At 50 ° C., observation was made by focusing on the solidification state of the emulsified layer and the uniformity at the time of shaking at 5 ° C.
The evaluation was based on (c) a four-step criterion. (C) Four-step criteria (Evaluation content) (Judgment) No problem at all: ◎ Almost no problem: ○ Slight problem: △ Problem: ×

(Evaluation Method for Easiness of Two Layers)
After shaking the two-layer hair treatments of Nos. 6 and Comparative Examples 1 to 7 to mix them uniformly, the mixture was allowed to stand at room temperature, and changes in the state of the appearance over time were observed. The evaluation was based on (2) four-step criteria. (2) Four-step criteria (Evaluation content) (Judgment) Become a stable two-layer within 6 hours: ◎ Be a stable two-layer within 6 hours and within 12 hours: ○ Over 12 hours and within 24 hours Stable two layers: △ Not stable two layers even after 24 hours: ×

[0022]

[Table 2]

As is evident from the results in Table 2, the two-layer hair treatment of the present invention has good separation of the two layers, good stability over time, hair feel (finish weight and stickiness), and flexibility. It showed good results in terms of gloss and luster, demonstrating that the hair treatment was excellent as a two-layer hair treatment.

Example 7 Double-Layer Hair Rinse (Composition) (Component Name) (% by Weight) Liquid paraffin 5.0 2. Squalane 5.0 3. Olive oil 2.0 4. 4. Polyoxyethylene monoisostearate 2.0 (20EO) glyceryl 5. Concentrated glycerin 5.0 Cationized cellulose (Note 1) 1.0 7. 7. Stearyl trimethyl ammonium chloride 1.0 dl-pyrrolidonecarboxylic acid 0.19. 9. dl-pyrrolidone carboxylate solution 0.5 Preservative appropriate amount 11. Ethyl alcohol 5.0 12. Appropriate amount of flavor 13. Purified water balance

(Production method) A: Components (1) to (4) are heated and dissolved. B: Components (5) to (10) and (13) are heated and dissolved. C: Add A to B and emulsify. D: C was cooled, and components (11) and (12) were added and mixed to obtain a two-layer hair rinse.

The two-layer hair rinse of Example 7 obtained as described above has good separation of the two layers, good stability over time, good feel of the hair after use, and excellent finish for supple hair. Showed a hair conditioning effect.

[0027]

The two-layer hair cosmetic composition of the present invention comprises an emulsified layer in which an oil agent is stably emulsified and an aqueous layer, and becomes a uniform emulsified layer by shaking. It is good as a two-layer hair cosmetic, which has good stability, good feel of the hair after use, and imparts flexibility and luster to the hair to give it a supple hair.

Claims (2)

[Claims] 1. The following components (A) to (D): (A) a hydrocarbon oil which is liquid at ordinary temperature 0.1 to 40% by weight; (B) a non-hydrocarbon which is liquid at ordinary temperature and has an HLB of 10 or more. Ionic surfactant 0.01 to 10% by weight (C) cationized cellulose 0.001 to 5% by weight (D) purified water, wherein the upper layer is an emulsified layer and the lower layer is an aqueous layer. Layered hair cosmetics. 2. The bilayer according to claim 1, wherein the nonionic surfactant which is liquid at room temperature and has an HLB of 10 or more is polyoxyethylene sorbitan monooleate and / or polyoxyethylene glyceryl monoisostearate. Type hair cosmetics.