| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsified cosmetic excellent in emulsion stability and temporal emulsion stability, and also excellent in sense of use such as nonstickiness. <P>SOLUTION: This oil-in-water type emulsified cosmetic includes the following (a) to (d); (a): one or two or more amphiphilic substances selected from (a1) to (a3); (a1): an amphiphilic protein; (a2): a copolymer of 2-acrylamide-2-methylpropanesulfonic acid or its salt/vinylpyrrolidone; (a3): micro-gel obtained by dissolving a water-soluble ethylenically unsaturated monomer in a dispersed phase in a composition comprising an organic solvent or oil as dispersant and water as dispersed phase, and radically polymerizing in the dispersed phase, where the micro-gel is obtained by radical polymerization of dimethylacrylamide and 2-acrylamide-2-methylpropane sulfonic acid under conditions such that the micro-gel forms one phase micro-emulsion or minute W/O emulsion; (b) a particle with less than 500 nm average particle diameter; (c) an oily component and (d) an aqueous component. <P>COPYRIGHT: (C)2013,JPO&INPIT |
