Discussion on the Efficacy Evaluation Method of Skin Repair Cosmetics

摘要

In order to explore the efficacy evaluation methods of skin repair cosmetics, 30 qualified subjects were selected to evaluate the efficacy of a cosmetic claimed to have repair efficacy by three methods: TEWL test, lactic acid tingling test and visual photography.The results showed that the three test results were improved to some extent, and there were significant differences in percutaneous water loss rate and lactic acid tingling test results.Although there was no significant difference in erythema index results, its value also decreased to a certain extent.Therefore, transcutaneous water loss rate test, lactic acid tingling test and erythema index are effective methods to test the efficacy evaluation of cosmetics.