An object of the present invention is to provide fine particles excellent in biodegradability and touch feeling. Disclosed are cellulose acetate particles, the cellulose acetate particles have an average particle size of 80 nm or more and 100 μm or less, a sphericity of 0.7 or more and 1.0 or less, and a surface smoothness of 80% or more and 100% or less, and the cellulose acetate has a total degree of acetyl substitution of 0.7 or more and 2.9 or less.

An object of the present invention is to provide fine particles excellent in biodegradability and touch feeling. Disclosed are cellulose acetate particles, the cellulose acetate particles have an average particle size of 80 nm or more and 100 μm or less, a sphericity of 0.7 or more and 1.0 or less, and a surface smoothness of 80% or more and 100% or less, and the cellulose acetate has a total degree of acetyl substitution of 0.7 or more and 2.9 or less.

Particulate aerogel material kit for grip enhancement, and related systems and methods, are generally described. Certain embodiments are related to interfaces comprising human skin, a layer of particulate aerogel material, and a solid surface. Methods of creating such interfaces, packaging the particulate aerogel material, and applications thereof (including kits for grip enhancement) are also described.

The present invention is a cosmetic containing a silicone resin whose constitutional units consist of general formulae (A) (R.sup.1.sub.3SiO.sub.1/2)a, (B) (R.sup.2.sub.2SiO.sub.2/2)b, (C) (R.sup.3SiO.sub.3/2) c, and (D) (SiO.sub.4/2) d, where R.sup.1, R.sup.2, and R.sup.3 each independently represent a group selected from an alkyl group having 1 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a fluorine-substituted alkyl group having 1 to 8 carbon atoms, “a” has a value of 0.2 to 0.5, “b” has a value of 0.0 to 0.1, “c” has a value of 0.2 to 0.6, “d” has a value of 0.2 to 0.5, a+b+c+d has a value of 1.0, a/(c+d) has a value of 0.3 to 0.9, and c/d has a value of 0.4 to 3.0, the silicone resin having a weight-average molecular weight of more than 20000 and 100000 or less. An object of the present invention is to provide accordingly a cosmetic that has no stickiness upon application, has excellent cosmetic durability, and can prevent adhesion to clothes or the like (secondary adhesion).

One of the objects of the present invention is to provide a cosmetic composition that comprises water-soluble silicone-modified polysaccharides and water, is capable of being blended in an aqueous phase of an emulsion, and improves the feeling during use, such as oiliness and stickiness. Furthermore, another object of the present invention is to provide a cosmetic composition that has water resistance and oil resistance, has excellent makeup durability, and does not come off with water but can be removed with warm water. The present invention provides a cosmetic composition comprising the following components (A) and (B): (A) a silicone-modified polysaccharide comprising one or more silicone residues bonded to a hydroxyl group in a monosaccharide unit of the polysaccharide, the silicone residues being represented by the general formula (1) and having an average number of the silicone residues bonded to one mol of the monosaccharide unit of 0.001 mol or more and 0.1 mol or less, in an amount of 0.05% to 20% by mass, based on a total mass of the cosmetic composition, and (B) water in an amount of 5% to 99% by mass, based on the total mass of the cosmetic composition.

One of the objects of the present invention is to provide a cosmetic composition that comprises water-soluble silicone-modified polysaccharides and water, is capable of being blended in an aqueous phase of an emulsion, and improves the feeling during use, such as oiliness and stickiness. Furthermore, another object of the present invention is to provide a cosmetic composition that has water resistance and oil resistance, has excellent makeup durability, and does not come off with water but can be removed with warm water. The present invention provides a cosmetic composition comprising the following components (A) and (B): (A) a silicone-modified polysaccharide comprising one or more silicone residues bonded to a hydroxyl group in a monosaccharide unit of the polysaccharide, the silicone residues being represented by the general formula (1) and having an average number of the silicone residues bonded to one mol of the monosaccharide unit of 0.001 mol or more and 0.1 mol or less, in an amount of 0.05% to 20% by mass, based on a total mass of the cosmetic composition, and (B) water in an amount of 5% to 99% by mass, based on the total mass of the cosmetic composition.

Provided is a white pigment for cosmetics capable of giving a cosmetic that gives a coating film having less stickiness and higher long-lasting properties. A white pigment for cosmetics of the present invention includes a titanium phosphate powder, the titanium phosphate powder includes crystal particles of titanium phosphate, and a ratio (oil absorption value/specific surface area) of an oil absorption value (ml/100 g) to a specific surface area (m.sup.2/g) of the crystal particles is 2.0 or more.

Provided is a white pigment for cosmetics capable of giving a cosmetic that gives a coating film having less stickiness and higher long-lasting properties. A white pigment for cosmetics of the present invention includes a titanium phosphate powder, the titanium phosphate powder includes crystal particles of titanium phosphate, and a ratio (oil absorption value/specific surface area) of an oil absorption value (ml/100 g) to a specific surface area (m.sup.2/g) of the crystal particles is 2.0 or more.

Provided is a polyurethane gel composition containing A and B below. Here, A represents a polyurethane obtained by reaction of (a) a hydrogenated polybutadiene having isocyanate groups at the terminals and (b) a glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), or A represents a polyurethane obtained by reaction of (c) a hydrogenated polybutadiene having hydroxyl groups at the terminals, (d) a diisocyanate compound, and the (b) glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), and B represents an oil agent. The polyurethane gel composition of the present invention is particularly useful as a raw material for cosmetics since a film of an oil-soluble gel obtained using the polyurethane gel composition is exceptionally excellent in any point of transparency, high gloss, elasticity, and resilience.

Provided is a polyurethane gel composition containing A and B below. Here, A represents a polyurethane obtained by reaction of (a) a hydrogenated polybutadiene having isocyanate groups at the terminals and (b) a glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), or A represents a polyurethane obtained by reaction of (c) a hydrogenated polybutadiene having hydroxyl groups at the terminals, (d) a diisocyanate compound, and the (b) glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), and B represents an oil agent. The polyurethane gel composition of the present invention is particularly useful as a raw material for cosmetics since a film of an oil-soluble gel obtained using the polyurethane gel composition is exceptionally excellent in any point of transparency, high gloss, elasticity, and resilience.