AO SkinCare, on behalf of skincare high technology, is a mobile application mainly for women users. Through bluetooth 4.0, it can be connected to A.O. Smith smart skin moisture tester. Your skin stratum corneum moisture content could be easily measured by the tester. Data and evaluation of your skin ,at the same time, can be displayed on your smart phone, wth your testing history being saved in the app. All history data can be checked by different time cycle. Data sharing on different social network platform, such as Facebook, Twitter, Instagram ,is also feasible.