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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Dihydroxyacetone

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.

Self-tanning agentVegan

BenefitGood 2.5 / 4

Pigmentation i2.5 / 4

Whether it can help uneven tone, dark spots, melasma-like discoloration, or post-inflammatory hyperpigmentation — including brightening and tyrosinase-inhibiting ingredients.

RiskModerate 1.5 / 4

Irritation i0.8 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Barrier disruption i0.5 / 4

Whether it can weaken or damage the skin barrier — harsh surfactants, strong exfoliants, high alcohol content, or overuse-prone actives.

Sensitization i0.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Eye irritation i0.5 / 4

Whether it may sting or irritate around the eyes. Relevant for sunscreens, fragrances, acids, surfactants, and volatile ingredients.

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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Products with Dihydroxyacetone

St. Tropez

Self Tan Classic Bronzing Lotion (Light/Medium)

3.5/ 53/12/19

NIVEA

Q10 Firming + Bronze Gradual Tan Body Lotion

3.3/ 52/5/14

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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.