Dehydroacetic Acid
dee-HY-droh-ah-SEE-tik ASS-id
What Is Dehydroacetic Acid?
A synthetic organic acid used as a broad-spectrum preservative in cosmetics. It is effective against bacteria, yeast, and mold across a wide pH range.
Source: Synthetic organic compound
Origin: Synthetic
Also known as: DHA (not the omega-3), Methylacetopyranone
What Does Dehydroacetic Acid Do to Your Hair?
Provides broad-spectrum antimicrobial preservation in hair products. Effective across a wider pH range than many natural preservatives. Often combined with benzyl alcohol for enhanced efficacy.
Best For
All hair types
Not Recommended For
None known
Concentration Matters
0.05-0.6% in products
Hair Type Compatibility
Method Compatibility
Safety & Regulation
Considered safe at standard cosmetic concentrations. Approved by ECOCERT and many natural certification bodies. Low irritation potential and no significant toxicity concerns.
FDA Status: Generally Recognized As Safe
FDA permits use in cosmetics at standard concentrations.
EWG Score: 2/10
HairAide Verdict
A respected preservative approved by natural and organic certification bodies. Keeps products safe from microbial contamination. A clean alternative to more controversial preservatives like parabens.
Products That Contain Dehydroacetic Acid
Shampoos, conditioners, natural hair products, organic-certified products
Alternatives to Dehydroacetic Acid
If you want to avoid Dehydroacetic Acid, look for products with these ingredients instead:
Sorbic Acid, Benzyl Alcohol, Phenoxyethanol
Frequently Asked Questions
Yes, Dehydroacetic Acid has a safety rating of 8/10 and is generally considered safe for use in hair products. Considered safe at standard cosmetic concentrations. Approved by ECOCERT and many natural certification bodies. Low irritation potential and no significant toxicity concerns.
Dehydroacetic Acid is CG-method approved and is generally considered safe for curly hair.
Yes, Dehydroacetic Acid is approved for the Curly Girl method.
Some alternatives to Dehydroacetic Acid include: Sorbic Acid, Benzyl Alcohol, Phenoxyethanol
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