Aerosol composition for hair and aerosol product for hair

Abstract

The present invention has as its object the provision of an aerosol composition for hair which has excellent deodorization effect and silky feeling and in which a powder hardly floats at an applied area, and an aerosol product for hair. An aerosol composition for hair of the present invention is characterized by comprising: 2 to 7% by mass of an oil absorbing powder having an oil absorption of 0.45 to 0.75 ml/g; 0.1 to 0.6% by mass of a polyol; 3 to 33% by mass of a lower alcohol; and 65 to 94% by mass of a hydrocarbon having 3 to 5 carbon atoms which has a vapor pressure of 0.05 to 0.35 MPa at a temperature of 20° C.; and containing no surfactant. An aerosol product for hair of the present invention is characterized by comprising the aerosol composition for hair filled in an aerosol container which is a pressure-resistant container having an aerosol valve, and in that the discharge amount is 0.3 to 1.2 g/second.

Claims

1. An aerosol composition for hair, comprising: 3 to 5% by mass of an oil absorbing powder having an oil absorption of 0.45 to 0.75 ml/g; 0.1 to 0.6% by mass of a polyol; 3 to 17% by mass of a lower alcohol; and 65 to 94% by mass of a hydrocarbon having 3 to 5 carbon atoms which has a vapor pressure of 0.05 to 0.35 MPa at a temperature of 20° C.; and containing no surfactant.

2. The aerosol composition for hair according to claim 1, wherein a proportion of the polyol is 0.1 to 0.3% by mass, a proportion of the lower alcohol is 12 to 17% by mass, and a proportion of the hydrocarbon is 65 to 83% by mass.

3. The aerosol composition for hair according to claim 1, wherein the oil absorbing powder is one or two or more types selected from the group consisting of a corn starch, a rice starch, a tapioca starch, a potato starch, a wheat starch, a siliconate-modified starch, aluminum starch octenylsuccinate, cellulose and silica.

4. An aerosol product for hair, comprising the aerosol composition for hair according to claim 1 filled in an aerosol container which is a pressure-resistant container having an aerosol valve, wherein a discharge amount is 0.3 to 1.2 g/second.

Description

EXAMPLES

(1) Hereinafter, Examples of the present invention will be described, but the present invention is not limited thereto.

Examples 1 to 4 and Comparative Examples 1 to 6

(2) First, composition materials shown in Table 1 below were prepared. In the prepared composition materials, the oil absorption of oil absorbing powder was measured by the following procedure. The results are shown in Table 1.

(3) Subsequently, the composition materials were filled in an aerosol container which was a pressure-resistant container having an aerosol valve at respective proportions shown in Table 1, to produce an aerosol product for evaluation.

(4) Example 3 was an example of a case where as an oil absorbing powder, a mixture (mixed powders) having an oil absorption of 0.60 ml/g obtained by mixing aluminum starch octenylsuccinate (oil absorption: 0.51 ml/g) and silica (oil absorption: 1.1 ml/g) was used. Comparative Example 1 was an example of a case where the oil absorption of oil absorbing powder was too large. Comparative Example 2 was an example of a case where the vapor pressure of hydrocarbon was too high. Comparative Example 3 was an example of a case where the proportion of polyol was too high. Comparative Example 4 was an example of a case where the proportion of oil absorbing powder was too high. Comparative Example 5 was an example of a case where the proportion of oil absorbing powder was too low. Comparative Example 6 was an example of a case where the proportion of lower alcohol was too high and the proportion of hydrocarbon is too low.

(5) The aerosol products for evaluation were each discharged to hair of each of ten subjects for about five seconds, and the hair was combed five times at an applied area. After that, sensory tests were performed. In the sensory tests, whether a silky feeling of scalp was satisfied, whether the hair was creaked, whether white residue was seen, and whether odor of sebum was removed were confirmed. In accordance with the following evaluation criteria, the silky feeling of scalp, creaking of hair, white residue and deodorization effect (against the odor of sebum) were evaluated. The results are shown in Table 1.

(6) For the content of each of the obtained aerosol products for evaluation, that was, the aerosol composition, the dispersibility was confirmed and evaluated according to the following procedure. The results are shown in Table 1.

(7) Measurement of Oil Absorption of Oil Absorbing Powder:

(8) On a glass plate, 1 g of oil absorbing powder was placed, squalane was added dropwise to the oil absorbing powder from a burette, and a kneading operation of kneading the whole oil absorbing powder by an iron spatula after each addition was repeated. In the repeated operation, the oil absorbing powder on the glass plate was aggregated and solidified. After that, when a softening phenomenon where the aggregate was abruptly softened by dropwise addition of squalane occurred, the dropwise addition of squalane was terminated. On the basis of the amount of squalane used until the softening phenomenon occurred (the amount of squalane used until the occurrence of softening phenomenon), the oil absorption of the oil absorbing powder was calculated by the expression (1) above.

(9) Silky Feeling of Scalp:

(10) A: A case where not less than eight subjects satisfied a silky feeling of scalp

(11) B: A case where five to seven subjects satisfied a silky feeling of scalp

(12) C: A case where three or four subjects satisfied a silky feeling of scalp

(13) D: A case where not more than two subjects satisfied a silky feeling of scalp

(14) Creaking of Hair:

(15) A: A case where not more than two subjects satisfied a creaking feeling of hair

(16) B: A case where three or four subjects satisfied a creaking feeling of hair

(17) C: A case where five to seven subjects satisfied a creaking feeling of hair

(18) D: A case where not less than eight subjects satisfied a creaking feeling of hair

(19) White Residue:

(20) A: A case where not more than two subjects was concerned about white residue

(21) B: A case where three or four subjects was concerned about white residue

(22) C: A case where five to seven subjects was concerned about white residue

(23) D: A case where not less than eight subjects was concerned about white residue

(24) Deodorization Effect (Odor of Sebum):

(25) A: A case where not less than eight subjects felt that the odor of sebum was removed

(26) B: A case where five to seven subjects felt that the odor of sebum was removed

(27) C: A case where three or four subjects felt that the odor of sebum was removed

(28) D: A case where not more than two subjects felt that the odor of sebum was removed

(29) Dispersibility of Aerosol Composition:

(30) The aerosol composition according to the aerosol product for evaluation was placed in a glass bottle for aerosol, and was allowed to stand for 3 days under a condition of a temperature of 45° C. After that, the glass bottle for aerosol was shaken vertically, and the dispersion state of the oil absorbing powder was visually confirmed. The dispersibility was evaluated in accordance with the following evaluation criteria.

(31) Evaluation Criteria of Dispersibility:

(32) A: A case where the oil absorbing powder was completely dispersed by one to three shakings

(33) B: A case where the oil absorbing powder was completely dispersed by four to six shakings

(34) C: A case where the oil absorbing powder was completely dispersed by seven to nine shakings

(35) D: A case where not less than ten shakings are required for complete dispersion of the oil absorbing powder

(36) TABLE-US-00001 TABLE 1 Example Comparative Example 1 2 3 4 1 2 3 4 5 6 Composition Lower alcohol Ethanol 16.85 12.85 14.85 14.50 14.85 15.85 14.00 9.85 18.85 45.85 (% by mass) polyol Propylene glycol 0.15 0.15 0.15 — 0.15 0.15 2.00 0.15 0.15 0.15 Oil 1,3-Butylene glycol — — — 0.50 — — — — — — absorbing Aluminum starch — 7.00 4.85 5.00 — 4.00 4.00 10.00 1.00 4.00 powder octenylsuccinate Rice starch 3.00 — — — — — — — — — Silica — — 0.15 — 5.00 — — — — — Total of oil absorbing 3.00 7.00 5.00 5.00 5.00 4.00 4.00 10.00 1.00 4.00 powder Hydrocarbon LPG0.25 MPa 80.00 80 00 80.00 80.00 80.00 — 80.00 80.00 80.00 50.00 (at 20° C.) LPG0.44 MPa — — — — — 80.00 — — — — (at 20° C.) Total 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Oil absorption of oil absorbing powder (ml/g) 0.49 0.51 0.60 0.51 1.1 0.51 0.51 0.51 0.51 0.51 Discharge amount (g/second) 0.78 0.67 0.84 0.75 0.72 1.34 0.85 0.78 0.63 1.1 Evaluation Dispersibility of oil absorbing B B A B B B B C A C powder Silky feeling of scalp B A A A A C D A D C Creaking of hair A A B A D A A A A B White residue B B A B D A B D A A Deodorization effect (odor of sebum) B B B B B B B B C B

(37) In Table 1, “aluminum starch octenylsuccinate” shows “OCTIE” manufactured by Nippon Starch Chemical Co., Ltd., “rice starch” shows “Rice starch” manufactured by JAPAN CORN STARCH CO., Ltd., “silica” shows “cosmetic silica QC4” manufactured by FUJI SILYSIA CHEMICAL LTD., and “tapioca starch” shows “Naviance Tapioca PLM” manufactured by Akzo Nobel N.V.

(38) From these results, it is confirmed that in the aerosol products of the present invention according to Examples 1 to 4, excellent deodorization effect and silky feeling are obtained and floating powder is hardly generated at an applied area.

(39) It is confirmed that in the aerosol compositions according to Examples 1 to 4 of the present invention, a good dispersion state of the oil absorbing powder is achieved without blending a surfactant.