Rate My SPF

Dihydroxyacetone

What Dihydroxyacetone is & what it does

Dihydroxyacetone, commonly abbreviated DHA, is a simple sugar-derived molecule best known as the active ingredient in self-tanning products. When applied to skin it reacts with amino acids in the outermost layer to produce a temporary brown tint, without involving UV exposure. In some formulas it appears at low levels for a subtle gradual-tan effect, and it is one of the most widely used sunless tanning agents in cosmetics.

What does Dihydroxyacetone do in skincare?

Dihydroxyacetone, often called DHA, is the main active in self-tanning products. It reacts with amino acids in the surface layer of the skin to create a temporary brown color, without any UV exposure. In some products it is used at low levels for a gradual, subtle tan effect.

Is Dihydroxyacetone safe?

Dihydroxyacetone is widely used as a topical sunless tanning agent and is generally regarded as suitable for that purpose when applied to the skin. It colors only the outer skin layer and does not provide sun protection on its own. Guidance commonly advises avoiding inhalation of sprays and contact with the eyes and lips; for specific concerns, consult a qualified professional.

Is Dihydroxyacetone natural or synthetic?

Dihydroxyacetone is a simple sugar-derived molecule that can occur in small amounts in nature and is also produced through fermentation or synthesis for cosmetic use. The grade used in self-tanners is typically manufactured to be pure and consistent.

Sunscreens with Dihydroxyacetone

We rate 8 sunscreens that contain it:

← All ingredients