Dehydroacetic acid
DHA
Preservative
Dehydroacetic acid is like a tiny bodyguard for products, stopping bad germs like bacteria and mold from growing inside them. This helps keep things like your shampoo or lotion fresh and safe to use for a long time.
Low Concern
Source: Cosmetic Ingredient Review (CIR) Expert Panel
The CIR Expert Panel found dehydroacetic acid to be safe for use in cosmetics at current concentrations, with no significant irritation or sensitization reported.
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Last updated: May 16, 2026