Effects of amla extract and collagen peptide on UVB-induced photoaging in hairless mice

► Amla (AE) and collagen peptide (CP) suppressed formation of 8-OHdG positive cells. ► AE and CP suppressed hyperplasia of epidermis. ► AE and CP acted in an additive manner in amelioration of skin hydration. ► AE and CP acted in an additive manner in amelioration of wrinkle formation.