US Patent No. 9,808,408 B2;  Procter & Gamble has been awarded a patent for a method of identifying a rinse off personal care composition as effective for improving the stratum corneum barrier in a selected population of subjects. The method entails generating one or more control skin profiles for two or more subjects in a select population of subjects wherein the subjects in the select population have dry or damaged skin; contacting at least a portion of skin of the subjects with a rinse-o...