Folic acid is the synthetic, oxidized form of vitamin B9 used in supplements and cosmetic products. In topical formulas, it acts as a water-soluble vitamin ingredient for antioxidant support and basic skin-conditioning roles.
A synthetic form of vitamin B9 used for mild antioxidant support.
Category
Antioxidant, Skin Conditioning
Type
Antioxidant
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Folic Acid a Good Ingredient?
Fair reflects the limited clinical support for topical folic acid and uncertainty about how well it penetrates skin, so benefits are likely modest. Irritation is uncommon but does occur in some users, which keeps it from a better rating.
What it does
Skin Benefits
Offers antioxidant assistance to help minimize the impact of everyday stressors, contributing to a more balanced appearance. Data for topical performance is modest and not well established.
Where you'll find it
Uses in Skincare & Cosmetics
Included in moisturizers, leave-on treatments, and essences to provide a water-soluble vitamin addition to skincare blends.
Before you use it
Safety
Typically well tolerated, with a low likelihood of irritation at cosmetic doses. Activity may decline with light and air exposure, so sensitive users should patch test.