Hydroxyacetophenone

Hydroxyacetophenone is an antioxidant that shows up in skincare to help protect your skin from free radical damage. Free radicals are unstable molecules that can contribute to dullness, uneven tone, and general skin aging over time. Antioxidants work by neutralizing these molecules before they cause problems.

It's a synthetic ingredient, so you'll find it in formulations where stability and consistency matter. It tends to work quietly in the background of a formula rather than being a star player. If you're looking for antioxidant protection, you might also see it paired with other antioxidants like vitamin E or niacinamide, which can layer the benefits.