Rheological Properties of Some Cosmetic Creams. III.

Studies on the Penetration into Soft Materials

Abstract

Rheological properties of some cosmetic creams were compared with penetrobalance (Kambe and Murakami, J. Chem. Soc. Japan, Ind. Chem. Sect., 63, 208 (1960), in Japanese). Cleansing cream of W/O type shows plastic behavior, but cold cream of O/W type has a rather soft surface and shows slight recovery for elasticity. Varnishing cream, which is a suspension of large amount of solid fatty acid is comparatively fluid and soft at its surface. These behaviors are fitted to the condition of application in each case.