Vitamin C provides antioxidant protection to treat and prevent changes associated with photoageing. The vitamin is naturally occurring and is used for photoaging, hyperpigmentation, tissue inflammation, and to promote tissue healing.
- Vitamin C provides potent antioxidant protection, shielding skin from damaging environmental stressors and is used for the treatment of hyperpigmentation. 
- Interacts with copper ions at the tyrosinase-active site and inhibits action of the enzyme tyrosinase, thereby decreasing the melanin formation. 
- Exhibits anti-inflammatory properties and can be used in conditions like acne vulgaris and rosacea. 
- Products containing both vitamin C and vitamin E have shown greater efficacy in photoprotection than either antioxidant alone. 
- Vitamin C and madecassoside (one of four principal bioactive compounds in the plant extract Centella asiatica) were characterized by “different mechanisms of activity, which exert an additive or synergistic effect causing the remodeling of the superficial dermis.”