JP6814958B2 - Formulation to be applied to the scalp - Google Patents

Description

The present invention relates to a composition for the scalp, which is excellent in imparting and sustaining a moisturizing effect on the scalp, and has less stickiness and squeaking of body hair such as hair, mustache, beard, and sideburns at the time of application.

In recent years, with the diversification of fashion, compositions using styling agents, hair coloring agents, and the like for body hair such as hair, mustache, beard, and sideburns have become widespread. In general, when using styling products and hair coloring agents, they often come into contact with not only body hair such as hair, mustache, beard, and sideburns, but also the scalp, and if left as it is for a long time, it may cause scalp trouble. Therefore, after use, it is carefully removed by washing the hair and face. In addition, after washing the hair or face, care for hair, mustache, beard, sideburns, and other body hair is performed by treatment, but scalp care is not well recognized and is often not performed. After careful hair washing and washing, the scalp tends to dry due to degreasing, which can cause dry dandruff and itching.Therefore, it is desirable to take care of not only the body hair but also the scalp after washing the hair and face. There is an urgent need for proposals for formulation technology that imparts a moisturizing effect. The scalp in the present invention represents the skin on which hair, mustache, beard, sideburns, and other body hair can grow from the neck to the crown.

Patent Document 1 discloses a composition for scalp massage, which aims to massage the scalp smoothly and effectively. Specifically, by containing a high molecular weight polyethylene glycol having an average molecular weight of 500,000 or more and containing at least one selected from a carboxyvinyl polymer and xanthan gum, it is smooth against a water-wet scalp. A technique that enables massage has been proposed, and in particular, by blending high molecular weight polyethylene glycol, both ease of massage and good finger passage of hair are achieved.

However, it is not preferable to leave the composition applied after the massage because it is sticky, so it is assumed that the composition is washed away. Therefore, it is difficult to sufficiently impart and maintain the moisturizing effect by removing the components by rinsing.

Patent Document 2 discloses a highly moisturizing emulsified composition having an effect of improving rough skin, moisturizing and glossing the skin, and having excellent safety. Specifically, a technique has been proposed in which a large amount of moisturizer and oil are stably contained in a formulation by using an alkyl-modified carboxyvinyl polymer as an emulsifier, and rough skin represented by cheeks is proposed. It is recommended to apply to.

However, when the composition is applied to the scalp, although a sufficient moisturizing effect is obtained, the composition adheres to body hair such as hair and causes stickiness and squeak. Therefore, it is not preferable to use the composition for application to the scalp.

In addition, a hair restorer or the like can be mentioned as a general scalp care product. It is known that a hair restorer is applied to the scalp to promote blood circulation and adjust the scalp environment, resulting in promotion of hair growth.

However, general hair restorers contain a large amount of ethanol, which promotes the elution of sebum and volatilization of water and tends to cause dryness, etc., and is not designed for the purpose of moisturizing the scalp, so it moisturizes. It is difficult to adequately impart and sustain the effect.

JP-A-2009-35486 Japanese Unexamined Patent Publication No. 7-149621

An object of the present invention is to propose a composition for the scalp, which aims to impart and maintain a moisturizing effect on the skin on which body hair such as hair, mustache, beard, and sideburns can grow, and has less squeak and stickiness at the time of application. It is in.

As a result of diligent studies to solve the above problems, the present inventor proposes a composition for scalp in which monoalkylene glycol, polyalkylene glycol which is liquid under 25 ° C. conditions, and oil agent which is liquid under 25 ° C. conditions are used in combination. This led to the present invention.

INDUSTRIAL APPLICABILITY The present invention provides a composition for the scalp, which is excellent in imparting and sustaining a moist feeling to the scalp, and has less stickiness and squeaking of body hair such as hair, mustache, beard, and sideburns at the time of application.

Further, according to the present invention, there is provided a scalp composition in which a thickener is contained to improve the scalp without dripping and the familiarity with the scalp.

Hereinafter, the present invention will be described in detail.

In the present invention, the following components (A) to (C)
(A) Monoalkylene glycol (B) Liquid polyalkylene glycol (C) under 25 ° C. Liquid oil is contained under 25 ° C. conditions, and the total content of component (A) and component (B) is 0. .1 to 10.0% by mass, and further, the mass% ratio (A) / (B) of the component (A) and the component (B) is 1/3 to 3/1. Composition for use.

The component (A) monoalkylene glycol contained in the embodiment of the present invention is not particularly limited as long as the molecule does not contain the repeating structure generated by polymerization.

Specific examples of the component (A) include ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin, diglycerin, and triglycerin. Of these, 1,3-butylene glycol is preferable from the viewpoint of moisturizing the scalp.

The component (B) contained in the embodiment of the present invention is not particularly limited as long as the liquid polyalkylene glycol under the condition of 25 ° C. contains a repeating structure generated by polymerization in the molecule. ..

Specific examples of the component (B) include, for example, polyethylene glycol, polypropylene glycol, polybutylene glycol, polyglycerin, or one or more selected from ethyleneoxy group, propyleneoxy group and butyleneoxy group in the molecule. Examples thereof include polyalkylene glycol contained as described above. Of these, polyethylene glycol is preferable from the viewpoint of moisturizing the scalp.

The average molecular weight of polyethylene glycol is not particularly limited, but is preferably 200 to 600, and more preferably 400.

If a solid polyalkylene glycol is contained under the condition of 25 ° C., the scalp, body hair and the like become sticky and unpleasant after application, which is not preferable.

The content of the component (A) and the component (B) is such that the total of the component (A) and the component (B) is 0.1 to 10.0% by mass with respect to the total mass, preferably 2.0 to 8%. It is 0.0% by mass. If the total of the component (A) and the component (B) is less than 0.1% by mass with respect to the total mass, the moist feeling of the scalp is insufficient and it becomes difficult to sufficiently care for the dryness of the scalp. , Not preferable. On the other hand, if the total of the component (A) and the component (B) exceeds 10.0% by mass with respect to the total mass, the scalp, body hair and the like become sticky after application, which is not preferable.

Further, from the viewpoint of reducing stickiness and squeaky feeling, the mass% ratio (A) / (B) of the component (A) and the component (B) is 1/3 to 3/1, preferably 1/2 to 2. It is / 1.

If the mass% ratio (A) / (B) is less than 1/3, the scalp, body hair, etc. become sticky and unpleasant remains after application, which is not preferable. On the other hand, if the mass% ratio (A) / (B) exceeds 3/1, the composition attached to the body hair causes the body hair to squeak and leave discomfort, which is not preferable.

The liquid oil agent under the condition of the component (C) 25 ° C. contained in the embodiment of the present invention is not particularly limited, but is preferably derived from a plant from the viewpoint of maintaining the moist feeling of the scalp.

Specific examples of the component (C) include camellia oil, yucha oil, olive oil, sesame oil, Argania spinosa kernel oil, pomegranate oil, rose hip oil, almond oil, macadamia nut oil, meadowfoam oil, and bergamot oil. Examples include avocado oil, jojoba oil, rosemary oil and the like.

The content of the component (C) is not particularly limited, but the content is preferably such that the scalp, body hair, etc. are not scratched, that is, 0.01 to 3.0% by mass. Further, when the component (C) is not contained, it becomes difficult to maintain the moist feeling of the scalp, which is not preferable.

Since the present invention is one of the most suitable applications for applying to a rounded scalp, even if a thickener is contained for the purpose of imparting an appropriate viscosity and preventing the composition from dripping. Good.

Specific examples of the thickener are not particularly limited, but are carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, (acryloyldimethyltaurine ammonium / VP) copolymer, sodium carboxymethyl cellulose, hydroxyethyl cellulose, chloride. Examples thereof include O- [2-hydroxy-3- (trimethylammonio) propyl] guar gum and xanthan gum. Of these, a thickener that thickens with a pH adjuster is preferable from the viewpoint of preventing dripping.

Specific examples of the thickener that thickens with a pH adjuster include, but are not limited to, a carboxyvinyl polymer, an acrylic acid / alkyl methacrylate copolymer, and the like. Of these, an acrylic acid / alkyl methacrylate copolymer is preferable from the viewpoint of familiarity with the scalp.

The content of the thickener is not particularly limited, but is 0.01 to 3.0% by mass, preferably 0.1 to 1.0% by mass, from the viewpoint of non-dripping and non-stickiness. %.

Specific examples of the pH adjuster include, but are not limited to, potassium hydroxide, 2-amino-2-methyl-1,3-propanediol and the like.

In addition to the above components (A) to (C), thickeners and pH adjusters, the present invention also includes anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants. Agents, solvents, polyhydric alcohols, moisturizers, refreshing agents, vitamins, preservatives, antioxidants, UV absorbers, chelating agents, colorants, fragrances, plant extracts, etc. may be contained, and these may contain 1 Species or two or more species may be contained.

The method of use of the present invention is to apply the composition to a water-wet or dry scalp and allow it to blend in. The amount of the composition used at one time is not particularly limited, but is about 0.1 to 10 g. The site to be applied is not particularly limited, but is preferably the scalp on the hair. Further, not only the scalp but also the hair, mustache, beard, sideburns and other body hair may be applied and blended.

Hereinafter, the present invention will be described in more detail with reference to examples, but these are not intended to limit the present invention in any way. In addition, the unit indicating the content is all mass% unless otherwise specified.

By preparing the compositions shown in Tables 1 to 6 by a conventional method and applying them to the scalp on the hair and to the body hair such as the hair, each evaluation item, that is, the moist feeling and stickiness of the scalp An evaluation test was conducted on the lack of squeaky hair, the lack of squeaky hair, and the persistence of moist scalp. The composition shown in Table 7 was prepared by a conventional method, and in addition to the above four items, an evaluation test was also conducted on the absence of dripping and the familiarity with the scalp.

(Evaluation method)
Ten panelists used the composition and performed sensory evaluation on each item. Each person evaluates each item on a 5-point scale of 5 points (very good), 4 points (good), 3 points (neither can be said), 2 points (bad), and 1 point (very bad). After calculating the average score of, the judgment was made according to the following judgment criteria.

(Criteria for judging the average score)
4.0 points or more: ◎
3.0 points or more and less than 4.0 points: ○
2.0 points or more, less than 3.0 points: △
Less than 2.0 points: ×

(1st evaluation test)
In the first evaluation test, the composition was evaluated by changing the types of the component (A) and the component (B). Table 1 shows the components of the composition, their contents, and the evaluation results.

(Second evaluation test)
In the second evaluation test, the composition was evaluated by changing the total mass% of the component (A) and the component (B). Table 2 shows the components of the composition, their contents, and the evaluation results.

(Third evaluation test)
In the third evaluation test, the composition was evaluated by changing the mass% ratio of the component (A) and the component (B). Table 3 shows the components of the composition, their contents, and the evaluation results.

(4th evaluation test)
In the fourth evaluation test, the composition was evaluated by combining the upper and lower limits of the total mass% and mass% ratio of the component (A) and the component (B). Table 4 shows the components of the composition, their contents, and the evaluation results.

(Fifth evaluation test)
In the fifth evaluation test, the composition was evaluated by changing the content and type of the component (C). Table 5 shows the components of the composition, their contents, and the evaluation results.

(6th evaluation test)
In the sixth evaluation test, the composition was evaluated by combining the upper and lower limits of the total mass% of the component (A) and the component (B) and the mass% of the component (C). Table 6 shows the components of the composition, their contents, and the evaluation results.

From Examples 1 to 34 shown in Tables 1 to 6, it was confirmed that good results were obtained for the moist feeling of the scalp, the non-stickiness, the non-squeaky feeling of the hair, and the maintenance of the moist feeling of the scalp.

(7th evaluation test)
In the seventh evaluation test, the case where the thickener was contained in the composition was examined. The reason for this is that the present invention is one of the most suitable embodiments for application to a rounded scalp, and it is preferable to impart an appropriate viscosity to prevent the composition from dripping. .. Table 7 shows the components of the composition, their contents, and the evaluation results.

From Examples 35 to 41 shown in Table 7, good results can be obtained regarding the moist feeling of the scalp, the non-stickiness, the non-squeaky feeling, the long-lasting moist feeling of the scalp, the non-dripping, and the familiarity with the scalp. did it.

Examples of formulations of the composition are listed below. The composition obtained by the following formulation example gave good results in terms of scalp moistness, non-stickiness, non-squeaky hair, long-lasting scalp moistness, no dripping, and good familiarity with the scalp. Got The present invention is not limited to these prescription examples.

(Prescription example 1)
Ingredient content (mass%)
(A) 1,3-butylene glycol 1.5
(B) Polyethylene glycol 400 1.5
(C) Jojoba oil 0.1
Acrylic acid / alkyl methacrylate copolymer 0.2
Carbomer 0.2
Potassium hydroxide 0.2
Ethanol 10.0
Disodium edetate 0.2
Methyl paraoxybenzoate 0.1
Polyoxyethylene cured castor oil 0.1
l-menthol 0.1
Fragrance 0.1
Purified water 85.7

(Prescription example 2)
Ingredient content (mass%)
(A) 1,3-butylene glycol 3.0
(B) Polyethylene glycol 400 3.0
(C) Argania spinosa coconut oil 1.5
Acrylic acid / alkyl methacrylate copolymer 0.6
Carbomer 0.6
2-Amino-2-methyl-1,3-propanediol 0.3
Ethanol 30.0
Disodium edetate 0.1
Methyl paraoxybenzoate 0.2
Polyoxyethylene hardened castor oil 0.4
l-menthol 0.3
Fragrance 0.1
Purified water 59.9

INDUSTRIAL APPLICABILITY The present invention can provide a composition for the scalp, which is excellent in imparting and sustaining a moisturizing effect on the scalp, and has less stickiness and squeaking of body hair such as hair, mustache, beard, and sideburns at the time of application.

Claims (3)

The following components (A) to (C),
(A) Monoalkylene glycol (B) Liquid polyalkylene glycol (C) under 25 ° C. Liquid oil is contained under 25 ° C. conditions, and the total content of component (A) and component (B) is 0. .1 to 10.0% by mass ,
Component (A) and mass% ratio of component (B) (A) / ( B) is Ri 1 / 3-3 / 1 der,
A preparation to be applied to the scalp , wherein the component (C) is at least one selected from a plant-derived oil agent and liquid paraffin . The preparation to be applied to the scalp according to claim 1, wherein the content of the component (C) is 0.01 to 3.0% by mass. The preparation to be applied to the scalp according to claim 1 or 2, further comprising a carboxyvinyl polymer or an acrylic acid / alkyl methacrylate copolymer.