Free acid form of vitamin B3; causes vasodilation and skin flushing at concentrations >0.1%; much more irritating than niacinamide; used in scalp products for circulation claims; distinguish clearly from niacinamide in formulation and claims; rarely used intentionally, more often an impurity concern in niacinamide
Function & Common Use
Active (circulation / flushing, use caution)
Active Ingredient
Hair growth serums scalp products (limited cosmetic use)
Synthetic
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
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Niacin safe to use in skincare?
Niacin has a Medium concern rating. Free acid form of vitamin B3; causes vasodilation and skin flushing at concentrations >0.1%; much more irritating than niacinamide; used in scalp products for circulation claims; distinguish clearly from niacinamide in formulation and claims; rarely used intentionally, more often an impurity concern in niacinamide
Is Niacin allowed in India?
Niacin is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Niacin used for in cosmetics?
Niacin functions as: Active (circulation / flushing, use caution). It is commonly found in: Hair growth serums scalp products (limited cosmetic use).
Regulatory Status
Identifiers
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