What it does
Antioxidant: helps protect skin from environmental stress, supports a brighter, more even-looking tone and plays a role in the skin's collagen production.
What the research says
Reviews of clinical studies describe topical vitamin C supporting collagen production, helping protect against UV-related damage alongside sunscreen and lightening the look of hyperpigmentation. Stable derivatives such as THD ascorbate are used because pure ascorbic acid breaks down easily.
Limitations, honestly
Results depend on the form, strength, pH and packaging. Most clinical data is on specific formulas, so it doesn't automatically apply to every vitamin C product. Always pair with daily SPF.
