What is vitamin C?
Vitamin C (L-ascorbic acid) is a water-soluble vitamin essential for the human body, with multiple functions such as antioxidation, promotion of collagen synthesis, and inhibition of melanin production.
Since the human body cannot synthesize vitamin C on its own, it must be supplemented through diet or external application.
The core functions of topical vitamin C:
Antioxidant: Neutralizes free radicals and protects the skin from oxidative damage. Vitamin C is a powerful antioxidant that can reduce oxidative stress caused by ultraviolet rays.
Inhibits melanin: Inhibits tyrosinase activity and blocks melanin production. By influencing the internal environment of melanocytes, it reduces pigmentation.
Promotes collagen synthesis: Acts as a cofactor in collagen synthesis and has a positive impact on collagen gene expression, improving skin elasticity.
Anti-photodamage: Reduces ultraviolet-induced damage and repairs photoaging. When used in combination with vitamin E and ferulic acid, it enhances photoprotective effects.
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