INCI name

HYDROXYACETOPHENONE

Hydroxyacetophenone

Antioxidantreviewed

An antioxidant and skin-conditioning ingredient that supports preservation.

What it is

Hydroxyacetophenone (4-hydroxyacetophenone) is a synthetic compound used as an antioxidant and skin-conditioning agent. It is not listed as a preservative in Annex V, but it boosts the effectiveness of preservation systems and is common in formulas marketed without traditional preservatives.

Where it is used

Found in serums, moisturisers, cleansers and baby products.

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.

Products marketed as preservative-free may rely on ingredients like this one to keep the formula stable.

Functions

Antioxidant
Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (1432)

Check a full ingredient list