The efficacy requirements of cosmetic instruments and explored their efficacy evaluation methods was investigated.The efficacy and claims of common cosmetic instruments on the market were investigated,and human clinic...The efficacy requirements of cosmetic instruments and explored their efficacy evaluation methods was investigated.The efficacy and claims of common cosmetic instruments on the market were investigated,and human clinical trials were conducted to evaluate the efficacy of household cosmetic instruments.Household cosmetic instruments mainly include technologies such as sound wave,ion conduction,LED light,EMS microcurrent,RF radio frequency,and laser.This paper took microcurrent as an example to explore its efficacy claim methods.In human test I,the water content in the stratum corneum of the forearms of 31 subjects increased significantly compared with the blank control after 8 h.In human test II,30 subjects showed significant decreases in skin texture R5,transepidermal water loss TEWL,skin firmness F4 value,skin elasticity R2 value,overall size and depth of facial wrinkles,and facial jawline angle,and a significant increase in facial gloss value.The results showed that the cosmetic instrument had effects of moisturizing,improving facial evenness,repairing barrier,improving skin elasticity and firmness,and improving facial edema.展开更多
文摘The efficacy requirements of cosmetic instruments and explored their efficacy evaluation methods was investigated.The efficacy and claims of common cosmetic instruments on the market were investigated,and human clinical trials were conducted to evaluate the efficacy of household cosmetic instruments.Household cosmetic instruments mainly include technologies such as sound wave,ion conduction,LED light,EMS microcurrent,RF radio frequency,and laser.This paper took microcurrent as an example to explore its efficacy claim methods.In human test I,the water content in the stratum corneum of the forearms of 31 subjects increased significantly compared with the blank control after 8 h.In human test II,30 subjects showed significant decreases in skin texture R5,transepidermal water loss TEWL,skin firmness F4 value,skin elasticity R2 value,overall size and depth of facial wrinkles,and facial jawline angle,and a significant increase in facial gloss value.The results showed that the cosmetic instrument had effects of moisturizing,improving facial evenness,repairing barrier,improving skin elasticity and firmness,and improving facial edema.
