Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Sensitization Profile
Contact sensitization data for Dehydroacetic Acid based on clinical patch test studies and IFRA standards.
Source: ESSCA; IVDK; NACDG
Dermal Penetration Profile
Skin absorption and penetration characteristics of Dehydroacetic Acid, relevant to systemic exposure and MoS calculations.
Source: SCCS Opinion
Expert Verdict
Dehydroacetic acid (DHA) is an EU Annex V-listed synthetic preservative with broader pH activity than organic acid preservatives, effective from pH 3 to approximately 7. EU max 0.6% as acid; prohibited in aerosols due to inhalation concern. Most commonly formulated as sodium dehydroacetate for improved solubility. Broad-spectrum activity against bacteria, fungi, and yeasts. Frequently combined with benzyl alcohol in COSMOS-approved preservation systems.
Regulatory Flags
Frequently Asked Questions
Is Dehydroacetic Acid safe in cosmetics?
Dehydroacetic acid (DHA) is an EU Annex V-listed synthetic preservative with broader pH activity than organic acid preservatives, effective from pH 3 to approximately 7. EU max 0.6% as acid; prohibited in aerosols due to inhalation concern. Most commonly formulated as sodium dehydroacetate for improved solubility. Broad-spectrum activity against bacteria, fungi, and yeasts. Frequently combined with benzyl alcohol in COSMOS-approved preservation systems. The EU classifies Dehydroacetic Acid as "restricted". Safety rating: GOOD.
Is Dehydroacetic Acid allowed in the EU?
Dehydroacetic Acid EU regulatory status: restricted. Maximum allowed concentration: 0.6%. This is based on EU Regulation 1223/2009 and its amendments.
What does Dehydroacetic Acid do in cosmetics?
Dehydroacetic Acid functions as: Preservative; broad-spectrum antimicrobial (bacteria, fungi, yeasts). It is classified as a Preservative in our database. CAS number: 520-45-6.
What is the Margin of Safety for Dehydroacetic Acid?
adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
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Related Ingredients
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