Vitamin C
Antioxidant
Also known as: Ascorbic Acid, L-Ascorbic Acid, Sodium Ascorbyl Phosphate, Ethyl Ascorbic Acid, Magnesium Ascorbyl Phosphate, Ascorbyl Glucoside
Description
Vitamin C is a potent water-soluble antioxidant essential for collagen synthesis. In topical skincare it brightens skin, fades hyperpigmentation, neutralises free radicals and provides photoprotection when combined with sunscreen. Multiple stable derivatives exist for cosmetic use.
Mechanism of Action
Neutralises reactive oxygen species (ROS) generated by UV exposure. Essential cofactor for prolyl and lysyl hydroxylases required in collagen biosynthesis. Inhibits tyrosinase activity, reducing melanin production. Regenerates vitamin E, extending its antioxidant activity.
Indications
- Photoaging
- Melasma
- Hyperpigmentation
- Dull skin
- Fine lines and wrinkles
- Post-inflammatory hyperpigmentation
Available Concentrations
Side Effects
- Tingling or stinging on application (L-ascorbic acid)
- Oxidation and discolouration of product
- Mild irritation in sensitive skin at high concentrations
Contraindications
- Known hypersensitivity
- Open wounds or severely compromised skin barrier
Pregnancy Category
A