A preservative, often used in products marketed without parabens.
What it is
Dehydroacetic acid is an organic compound active mainly against moulds and yeasts. It is allowed as a preservative in the EU (Annex V) with a maximum concentration and is often combined with benzyl alcohol or other preservatives.
Where it is used
Found in creams, lotions, cleansers and natural-positioned cosmetics.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
It works best in slightly acidic formulas; the label does not show the concentration used.
Functions
- Preservative
- Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.
EU regulation
EU · Annex V, entry 133-Acetyl-6-methylpyran-2,4(3H)-dione and its salts
- Maximum concentration
- 0.6% (as acid)
- As of
- 3 November 2026 · (EC) 2009/1223
Products with this ingredient (1255)
- Very Rose Biphase Waterproof Eye and Lip Make-Up Remover · Nuxe
- Moringa Body Yogurt · The Body Shop
- British Rose Body Yogurt · The Body Shop
- Dewberry Body Yogurt · The Body Shop
- Pumpkin Bath & Shower Cream · The Body Shop
- Almond Milk Body Yogurt · The Body Shop
- Revolution Pro Ultimate Radiant Under Eye Concealer · Revolution
- Revolution Matte Base Foundation · Revolution
- I Heart Revolution Watermelon Dewy Blusher Tint · Revolution
- I Heart Revolution Heartbreakers Concealer · Revolution
- Revolution Pro Miracle Eye Cream · Revolution
- Revolution Skincare 5% Glycolic Acid Toner · Revolution