JPH05139932A - Hair cosmetic - Google Patents

Abstract

PURPOSE:To obtain a hair cosmetic having no oily feeling and no feeling of greasiness in application to hair, providing scalp with a refreshing and excellent feeling of use and having no skin irritation. CONSTITUTION:A hair cosmetic is blended with (a) preferably 0.1-5.0wt.% fine powder having a silicone skeleton such as spherical dimethylpolysiloxane polymer powder having preferably 0.5-10mum, especially 5-10mum average particle diameter or spherical polymethylsilsesquioxane powder having 0.5-10mu, especially 5-5mum average particle diameter and a particle size distribution of + or -30% the average particle diameter and (b) preferably 0.1-20wt.% volatile oil agent such as volatile silicone oils of formula I to formula II ((x) is 0-3 integer; (y) is 4, 5 or 6) or 8-20C isoparaffinic hydrocarbon as essential components to give a hair cosmetic having the above-mentioned effects.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic composition, and more specifically, it does not give an oily feeling or a sticky feeling when applied to hair, imparts a refreshing and good feeling to the scalp, and has no skin irritation. Regarding hair cosmetics.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Hair cosmetics containing a volatile organic solvent or an antibacterial agent are used in order to give the scalp a clean feel.
However, both the volatile organic solvent and the antibacterial agent have a problem that irritation to the skin occurs when they are mixed in amounts sufficient to obtain the effect.

Further, there are hair cosmetics containing styrene beads and the like, but these are not satisfactory in terms of feeling.

Therefore, it has a refreshing feel,
In addition, there has been a demand for the development of hair cosmetics that do not cause skin irritation.

[0005]

Under such circumstances, as a result of intensive studies, the present inventors have found that a hair cosmetic containing fine powder having a silicone skeleton and a volatile oil has no sticky feeling and is refreshing. The present invention has been completed based on the finding that it imparts an excellent feeling of use to the scalp and has less skin irritation.

That is, the present invention provides a hair cosmetic containing (a) a fine powder having a silicone skeleton, and (b) a volatile oil agent.

Examples of the fine powder having a silicone skeleton (a) used in the present invention include dimethylpolysiloxane polymer powder and polymethylsilsesquioxane powder.

Of these, the particle shape of the dimethylpolysiloxane polymer powder is spherical and the average particle diameter is 0.5.
It is preferably 10 to 10 μm, particularly 5 to 10 μm.

As the dimethylpolysiloxane polymer powder, for example, fine particles of silicone resin, silicone rubber, etc., fine particles of dimethylpolysiloxane modified with epoxy or amino, and fine particles of methylphenylsilicone, etc. The thing etc. are mentioned. As the dimethylpolysiloxane polymer powder, a commercially available product may be used, and for example, "Trefil E-500", "Trefil E-501", "Trefil E-600" (manufactured by Toray Silicone Co., Ltd.) and the like are used.

The polymethylsilsesquioxane powder has a network structure in which siloxane bonds extend three-dimensionally, and has an intermediate structure between inorganic and organic in which one methyl group is bonded to a silicon atom.

The particles of the polymethylsilsesquioxane powder have a spherical shape, and the average particle diameter is 0.5 to 10 μm.
Particularly, those having a particle size of 5 to 5 μm are preferable, and those having a particle size distribution within a range of ± 30% of the average particle diameter are more preferable.

The polymethylsilsesquioxane powder is composed of true spherical particles having an average particle diameter of 2 μm, a true specific gravity of 1.3, a bulk specific gravity of 0.35, a specific surface area of 15 to 30 m ² / g, and a linseed oil absorption amount of 75 ml / Consisting of 100 g of white fine powder "Tospearl 120" and particles having an average particle size of 4 µm, a true specific gravity of 1.3, a bulk specific gravity of 0.17, and a specific surface area of 20 to 30 m ² /
g, "Tospearl 240", which is a white fine powder having a linseed oil absorption of 84 ml / 100g, or "Tospearl 13
0 "and" Tospearl 140 "are sold by Toray Silicone Co., Ltd.
It can also be synthesized according to the method described in the publication.

The amount of the (a) fine powder having a silicone skeleton in the hair cosmetic composition of the present invention may be varied depending on the dosage form, but is preferably 0.1 to 5.0% by weight.

The volatile oil agent (b) used in the present invention is, for example, the following general formula (1) or general formula (2).
The volatile silicone oil represented by

[0015]

[Chemical 1]

[0016]

[Chemical 2]

As the volatile oil agent (b), an isoparaffin hydrocarbon having 8 to 20 carbon atoms can also be used. Specific examples thereof include Isozol 200, Isozol 300, Isozol 400 (all manufactured by Nippon Oil Co., Ltd.) and the like.

The amount of the volatile oily agent (b) blended in the hair cosmetic composition of the present invention can be varied depending on the dosage form, but is preferably 0.1 to 20% by weight.

The hair cosmetic composition of the present invention preferably further contains a non-volatile oil agent from the viewpoint of the feel and aesthetics when applied to the hair, and this non-volatile oil agent is generally used in hair cosmetics. There is no particular limitation so long as it is a silicone oil such as dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, octamethylcyclopentasiloxane, decamethylcyclopentasiloxane. Non-volatile; vegetable oils such as avocado oil, camellia oil, macadamia nut oil, olive oil, jojoba oil; fatty acids such as oleic acid and isostearic acid; hexadecyl alcohol,
Alcohols such as oleyl alcohol; 2-ethylhexanoate cetyl, 2-ethylhexyl palmitate, 2-octyldodecyl myristate, neopentyl glycol di-2-ethylhexanoate, glycerol tri-2-ethylhexanoate, olein Acid-2-octyldodecyl, isopropyl myristate, glycerol triisostearate, glycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate,
Examples thereof include esters such as 2-ethylhexanoic acid diglyceride and di-paramethoxycinnamic acid-mono-2-ethylhexanoic acid glyceryl; liquid hydrocarbon oils such as liquid paraffin, squalene and squalane.

The hair cosmetic composition of the present invention can be produced by mixing the above-mentioned components by a conventional method and can be made into any dosage form such as an emulsified form or a solution form. Formulations such as a lotion and an aerosol spray which are used by stirring in the formula are preferable, and can be a hair conditioner, a hair treatment, a hair lotion and the like.

In the hair cosmetic composition of the present invention, if necessary, components usually used in hair cosmetic compositions such as surfactants; antidandruff agents, bactericides, vitamins and other medicinal agents; parabens and other antiseptics. Agents; thickeners such as perfluoropolyethers and water-soluble polymers; coloring agents such as dyes and pigments; conditioning agents such as cationic polymers; pearling agents such as glycol esters; hair setting polymers such as acrylic resin liquids; Various fragrances; Others Encyclopedia of Conditioning Rinse Ingredients [ENCYCLOPEDIA OF CONDITIONING RINSE INGREDIENTS
(MICELLE PRESS, 1987)], and the like, may be appropriately blended within a range that does not impair the effects of the present invention.

[0022]

EFFECTS OF THE INVENTION The hair cosmetic composition of the present invention has no oily feeling and no sticky feeling when applied to hair, imparts a refreshing and good feeling to the scalp, and is excellent without skin irritation. ..

[0023]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited thereto.

Example 1 A hair cosmetic composition having the composition shown in Table 1 below was prepared by a conventional method.

[0025]

[Table 1]

Test Example The product 1 of the present invention obtained in Example 1 was used to evaluate the feeling of use by the half head method. That is, the hair of eight monitors was divided into left and right, and the product of the present invention was applied to one side of the hair,
Comparative product 1 was applied to the other side, and after 6 hours and 12 hours after application, the presence or absence of stickiness of the scalp at the application site of the present invention compared to the scalp at the application site of Comparative product 1 was asked to be answered. The results are shown in Table 2.

[0027]

[Table 2]

From the results shown in Table 2, it is clear that the hair cosmetic composition of the present invention has no stickiness on the scalp and has a refreshing feeling of use.

Example 2 Hair Lotion A hair lotion having the following composition was prepared by a conventional method. (Composition) (wt%) Ethanol 50 Silicone fine powder (Tospearl 130, manufactured by Toshiba Silicone Co., Ltd.) 1.5 Volatile silicone oil (dimethylpolysiloxane, viscosity at 25 ° C 10 cst) 1.0 Octamethylpentasiloxane 1. 0 l-menthol 0.1 water balance

Example 3 Mist-like hair lotion (composition) (% by weight) Ethanol 60 Silicone fine powder (Tospearl 130) 1.0 Volatile hydrocarbon (Isosol 300, manufactured by Nippon Oil Co., Ltd.) 1.0 Octyldodecyl myristate 0 0.5 Fragrance 0.15 Water balance To 40% of this stock solution, 60% of LP gas was used as a propellant to fill a pressure container to obtain a mist-like hair lotion.

Claims (1)

[Claims] 1. (a) Fine powder having a silicone skeleton,
And (b) a volatile oil, which is contained in the hair cosmetic composition.