The present invention relates to a method for forming a coating film including a step of coating a liquid composition I containing a solvent A, a solvent B, and a polymer C to skin, wherein a boiling point of the solvent A is lower than 99° C., and a distance Ra of the Hansen solubility parameter of the solvent A to water is 36 or less; a boiling point of the solvent B is 150° C. or higher, and a distance Ra of the Hansen solubility parameter of the solvent B to water is 40 or more; and the solvent B is compatible with the solvent A, and the polymer C is soluble in the solvent A but insoluble in the solvent B.

The present invention relates to a method for forming a coating film including a step of coating a liquid composition I containing a solvent A, a solvent B, and a polymer C to skin, wherein a boiling point of the solvent A is lower than 99° C., and a distance Ra of the Hansen solubility parameter of the solvent A to water is 36 or less; a boiling point of the solvent B is 150° C. or higher, and a distance Ra of the Hansen solubility parameter of the solvent B to water is 40 or more; and the solvent B is compatible with the solvent A, and the polymer C is soluble in the solvent A but insoluble in the solvent B.

This application discloses a polymer ultraviolet absorbent and preparation method and application thereof. The synthesis process of the polymer ultraviolet absorbent does not require additional organic solvents, and the reaction by-product is high-purity ethanol, which is relatively economical. green, efficient and environmentally friendly. The polymer ultraviolet absorbent has good water solubility, is convenient to use, safe and non-toxic, and has excellent ultraviolet absorption effect.

This application discloses a polymer ultraviolet absorbent and preparation method and application thereof. The synthesis process of the polymer ultraviolet absorbent does not require additional organic solvents, and the reaction by-product is high-purity ethanol, which is relatively economical. green, efficient and environmentally friendly. The polymer ultraviolet absorbent has good water solubility, is convenient to use, safe and non-toxic, and has excellent ultraviolet absorption effect.

Provided is a rinse-off-type hair cosmetic composition used by being applied to hair and then washed away, the hair cosmetic composition comprising: the ingredients (A) to (C) below, and water, wherein a molar ratio of the ingredient. (B) to the ingredient (A), (B)/(A), is less than 3, and a mass ratio of the ingredient (C) to the ingredient (A), (C)/(A), is less than 1: (A) an amido-cationic surfactant represented by formula (1) ##STR00001## wherein R.sup.1 represents a C.sub.11-17-alkyl group or alkenyl group, R.sup.2 represents a C.sub.2-4-alkylene group, R.sup.3, R.sup.4, and R.sup.5 independently represent a C.sub.1-3-alkyl group, an alkenyl group, or hydroxyalkyl group, and X.sup.− represents an anion; (B) a fatty alcohol having 14 to 18 carbon atoms; and (C) a silicone.

Provided is a rinse-off-type hair cosmetic composition used by being applied to hair and then washed away, the hair cosmetic composition comprising: the ingredients (A) to (C) below, and water, wherein a molar ratio of the ingredient. (B) to the ingredient (A), (B)/(A), is less than 3, and a mass ratio of the ingredient (C) to the ingredient (A), (C)/(A), is less than 1: (A) an amido-cationic surfactant represented by formula (1) ##STR00001## wherein R.sup.1 represents a C.sub.11-17-alkyl group or alkenyl group, R.sup.2 represents a C.sub.2-4-alkylene group, R.sup.3, R.sup.4, and R.sup.5 independently represent a C.sub.1-3-alkyl group, an alkenyl group, or hydroxyalkyl group, and X.sup.− represents an anion; (B) a fatty alcohol having 14 to 18 carbon atoms; and (C) a silicone.

The present invention provides a water-in-oil type emulsion cosmetic which has a fresh and smooth feeling to the touch; forms a uniform coating film once applied; can make skin unevenness such as pores look less prominent while covering discolorations such as age spots and freckles; and does not give an impression of thick application. The water-in-oil emulsion cosmetic is characterized by including (A) 0.1-10% by mass of a pigment-grade titanium dioxide and (B) 0.01-2% by mass of sodium acrylate grafted starch. It is preferred that this cosmetic further includes (C) spherical particles and/or (D) a silicone elastomer.

The present invention provides a water-in-oil type emulsion cosmetic which has a fresh and smooth feeling to the touch; forms a uniform coating film once applied; can make skin unevenness such as pores look less prominent while covering discolorations such as age spots and freckles; and does not give an impression of thick application. The water-in-oil emulsion cosmetic is characterized by including (A) 0.1-10% by mass of a pigment-grade titanium dioxide and (B) 0.01-2% by mass of sodium acrylate grafted starch. It is preferred that this cosmetic further includes (C) spherical particles and/or (D) a silicone elastomer.

The present invention relates to a detergent containing or prepared by blending: (A) at least one selected from the group consisting of an alkyl sultaine, an alkyl hydroxysultaine, and a nonionic surfactant; and (B) an aminopolyether-modified silicone containing a polyoxyalkylene structure and satisfying the following formula (I):

0.01≤Si/AO≤1.6  (I)

[in the formula (I), Si represents a molar number of a silicon atom in the component (B), and AO represents an oxyalkylene average addition molar number in the component (B)], wherein a mass ratio [(A)/(B)] of the component (A) to the component (B) is 0.1 or more and 1,000 or less.

The present invention relates to a detergent containing or prepared by blending: (A) at least one selected from the group consisting of an alkyl sultaine, an alkyl hydroxysultaine, and a nonionic surfactant; and (B) an aminopolyether-modified silicone containing a polyoxyalkylene structure and satisfying the following formula (I):

0.01≤Si/AO≤1.6  (I)

[in the formula (I), Si represents a molar number of a silicon atom in the component (B), and AO represents an oxyalkylene average addition molar number in the component (B)], wherein a mass ratio [(A)/(B)] of the component (A) to the component (B) is 0.1 or more and 1,000 or less.