abstract |
Provision of an N-acyl basic amino acid dispersion superior in dispersibility. The present invention provides a production method of an N-acyl basic amino acid dispersion having a pH of 2 to 12, comprisingn (1) a step of dissolving an N-acyl basic amino acid in a base solution, and (2) a step of mixing the obtained N-acyl basic amino acid solution with one or more equivalents of an acid relative to the base. |