What it is
Dehydroacetic Acid is a pyranone compound used to inhibit the growth of bacteria, yeast, and mold in cosmetic products, helping maintain their stability over time. It is often paired with other preservatives, including in formulas marketed as having gentle preservative systems. It works best in mildly acidic formulations and is used at low concentrations within regulatory limits.
Safety & warnings
Dehydroacetic Acid is used as a preservative within established cosmetic concentration limits and is generally well tolerated. As with many preservatives, sensitive individuals can occasionally react, so patch testing is reasonable for those with reactive skin.
Origin & sourcing
Synthetic; manufactured as a defined organic compound for use as a cosmetic preservative.
Questions everyone asks
What is dehydroacetic acid used for?
It is a preservative that protects cosmetic products against bacteria, yeast, and mold to keep them stable.
Is it used at high levels?
No. It is used at low concentrations within regulatory limits, typically alongside other preservatives.