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Dehydroacetic Acid

Dehydroacetic acid is a preservative that is especially good against moulds and yeasts. It is usually paired with benzyl alcohol, which covers bacteria.

On a list as
Dehydroacetic Acid
What it does
Preservative
Where it comes from
Synthetic
Vegan?
Yes

Why it’s in a formula

Water-based serums need protection once they're opened. This pairing is one of the preservative systems chosen for formulas without parabens or formaldehyde releasers.

  • It is permitted in cosmetics at low concentrations in the EU and is generally well tolerated.
About benzyl alcohol, its partner

Read from each piece’s published ingredient list. 5 pieces.

Lumière

Lumière

Brightening Serum — 30ml

$118

Listed as Dehydroacetic Acid

Vegan, going by its list

La Rosée

La Rosée

Hyaluronic Acid Serum — 30ml

$98

Listed as Dehydroacetic Acid

Vegan, going by its list

Le Peptide

Le Peptide

Matrixyl 3000 Peptide Serum — 30ml

$128

Listed as Dehydroacetic Acid

Cruelty-free; vegan status not confirmed

La Brume

La Brume

Rose Face & Body Mist — 118ml

$48

Listed as Dehydroacetic Acid

Vegan, going by its list

Le Mascara

Le Mascara

Volumizing Mascara

$46

Listed as Dehydroacetic Acid

Not vegan: beeswax

Is dehydroacetic acid safe?

At the low levels permitted in cosmetics it is considered safe and rarely irritates.

How we know: every ingredient list on this site is the manufacturer’s own, read piece by piece and shade by shade, and the pieces above are worked out from those lists each time the site is built. Ingredient names and functions follow the EU’s CosIng database. This page describes cosmetic ingredients; it isn’t medical advice.