Vitamin C
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. [Pullar 2017] [Telang 2013]
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. [Pinnell 2001]
Indications
Available Concentrations
Side Effects
Contraindications
- Known hypersensitivity [Telang]
- Open wounds or severely compromised skin barrier
Pregnancy Category
A
Found In
Cosmetics containing Vitamin C
Related Conditions
References
- Pinnell SR, Yang H, Omar M, et al. "Topical L-ascorbic acid: percutaneous absorption studies." Dermatol Surg, 2001. doi:10.1046/j.1524-4725.2001.00264.x
- Pullar JM, Carr AC, Vissers MCM. "The roles of vitamin C in skin health." Nutrients, 2017. doi:10.3390/nu9080866
- Telang PS. "Vitamin C in dermatology." Indian Dermatol Online J, 2013. doi:10.4103/2229-5178.110593
Limitations
This page provides a general overview of Vitamin C in dermatology. It does not cover every possible use, formulation, or interaction. Individual responses to compounds vary — what works for one person may not work for another. Always consult a qualified dermatologist before starting or changing any treatment.