Unstable, oxidises at >pH 3.5 and on air exposure; requires pH 2.5-3.5 and dark/airless packaging; EU no concentration limit but 10-20% is evidence-backed efficacy range; assay required for any concentration claim
Function & Common Use
Active (Antioxidant / Brightening)
Active Ingredient
Vitamin C serums
Synthetic / Vegetable
Concentration Limits
No limit
No limit
No specific 21 CFR cosmetic limit identified in source checked
No specific MFDS limit identified in source checked; verify if ingredient is used in a Korean functional cosmetic category
Format restriction: Leave-on
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Ascorbic Acid safe to use in skincare?
Ascorbic Acid has a Low concern rating from The Clean Sheet. Unstable, oxidises at >pH 3.5 and on air exposure; requires pH 2.5-3.5 and dark/airless packaging; EU no concentration limit but 10-20% is evidence-backed efficacy range; assay required for any concentration claim
Is Ascorbic Acid allowed in India?
Ascorbic Acid is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Ascorbic Acid used for in cosmetics?
Ascorbic Acid functions as: Active (Antioxidant / Brightening). It is commonly found in: Vitamin C serums.
Regulatory Status
Identifiers
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