Abstract: The present invention aims to provide a composition, particularly a starting material composition for fragrances and cosmetics, which imparts excellent emulsification stability and dispersion stability. The object can be achieved by a composition comprising a component A, and one or more components selected from the group consisting of a component B, a component C, a component D, and a component E (provided that only the component C or only the component D is excluded), as described in the description.

Abstract: There is provided a cleansing composition which has creamy foaming and excellent cleansing power, provides no stretched feeling of skin after rinsing and a refreshed feeling of skin, is excellent in storage stability and exhibits no reduction in physical properties, formation of precipitates and yellowing during a long-term storage period by combining N-acyl-aspartic acid or a salt thereof and N-acyl-diaspartic acid or a salt thereof, which have the same molecular structure of the N-acyl group, with a higher fatty acid or a salt thereof which has the same alkyl group as that of the above described N-acyl residue.

Abstract: Disclosed is a cellooligosaccharide composition comprising, as the main ingredient, at least one cellooligosaccharide selected from the group consisting of cellobiose, cellotriose, cellotetraose, cellopentaose and cellohexaose, which is in the powdery form having an average L/D value of 3.0 or lower, a bulk density of 0.80 g/mL or lower and an angle of repose of 60° or lower.

Abstract: Disclosed is a cellooligosaccharide composition comprising, as the main ingredient, at least one cellooligosaccharide selected from the group consisting of cellobiose, cellotriose, cellotetraose, cellopentaose and cellohexaose, which is in the powdery form having an average L/D value of 3.0 or lower, a bulk density of 0.80 g/mL or lower and an angle of repose of 60° or lower.

Abstract: There is provided a cleansing composition which has creamy foaming and excellent cleansing power, provides no stretched feeling of skin after rinsing and a refreshed feeling of skin, is excellent in storage stability and exhibits no reduction in physical properties, formation of precipitates and yellowing during a long-term storage period by combining N-acyl-aspartic acid or a salt thereof and N-acyl-diaspartic acid or a salt thereof, which have the same molecular structure of the N-acyl group, with a higher fatty acid or a salt thereof which has the same alkyl group as that of the above described N-acyl residue.

Abstract: A process for producing a long chain N-acyl acidic amino acid removes impurities by separating a mixture composed of a long chain N-acyl acidic amino acid containing an inorganic salt and a medium containing water and tertiary butanol into an aqueous layer and an organic layer containing the long chain N-acyl acidic amino acid at a temperature of from 35 to 80° C.