Dihydroxyacetone (DHA) is a sugar molecule that reacts with amino acids in the outermost layer of the skin to produce a temporary brown color. It is the most common active ingredient in self-tanning products, providing a sunless tan without UV exposure. The tan typically lasts several days and fades as the skin naturally exfoliates.
NoneSelf-tanning agentEvidence: High
BenefitGood 2.5 / 4
Pigmentation
RiskModerate 1.5 / 4
Irritation
Barrier disruption
Sensitization
Eye irritation
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
Provides sunless tan
Avoids UV exposure
Customizable tan depth
Things to watch
Can cause skin dryness
May have a distinct odor
Can stain clothing if not fully dry
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Frequently asked questions
How does Dihydroxyacetone (DHA) create a tan?
DHA reacts with amino acids in the dead skin cells on the skin's surface, creating melanoidins, which are brown pigments. This reaction is known as the Maillard reaction.
Is a DHA tan protective against the sun?
No, a DHA-induced tan does not provide any protection against UV radiation. It is essential to still use sunscreen when exposed to the sun.
How long does a DHA tan last?
A DHA tan typically lasts for about 5-7 days, as the outermost layer of skin cells, where the tan is formed, naturally sheds.
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