Safe. According to Dr. Chun Yu's inquiry, there is no threat to wrinkle removal with the cell preservation solution of Nuwa, and the key to wrinkle removal is to fill the cells, which needs to be done in the outpatient department of the local regular hospital, with high safety. Nuwa cell preservation solution is filled with autologous fat, fatty gum, autologous serum, etc. , mainly extracted from the beauty lover's own cells, and then filled. The technology is mature and it is safe to inject in regular institutions.