Dihydroxyacetone
Ingredient Info
Dihydroxyacetone (DHA) is a 3-carbon sugar approved by the FDA as a color additive for sunless tanning products. When applied to skin, it reacts with proteins in the outer layer to produce a temporary brown tan-like color that develops over a few hours.
Benefits
- Creates a tan appearance without sun exposure
- Temporary effect that washes off with soap and water
- Allows customization of tan depth depending on product concentration
Potential concerns
- Should not contact eyes, lips, or mucous membranes
- Inhalation of spray-tan mist is not FDA-approved and should be avoided
- May cause streaking or uneven coloring if not applied evenly
Science: DHA has been used safely in topical tanning products since the 1960s. It works by binding to free amino groups in skin proteins, particularly arginine, to create the brown color. Current research suggests DHA staining may have diagnostic applications in dermatology for identifying skin lesions.
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