这有两种副作用小的

肉皮+维生素C, 

Vitamin C is an essential part of skin health both as a small molecular weight antioxidant and as a critical factor for collagen synthesis. Vitamin C contributes to photoprotection, decreases photodamage, and is needed for adequate wound healing.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579659/