Dihydroxyacetone
Dihydroxyacetone, often called DHA, is the ingredient responsible for the golden glow in most fake tans and sunless tanning products. It reacts gently with the surface proteins in your skin to create a natural-looking tan without any UV exposure. Widely used in UK self-tanning mousses, lotions and sprays, it gives a safe, streak-free colour that develops over a few hours.
How it works in skincare
In cosmetics and skincare, dihydroxyacetone works by reacting with free amino acids in the upper layers of the epidermis through the Maillard reaction. This produces brown pigments known as melanoidins that mimic the look of a natural tan. The colour develops gradually over 2–6 hours and typically lasts 5–7 days as the skin naturally sheds, making it a staple in UK self-tanning formulations where an even, buildable glow is desired.
Key benefits
- Creates a natural-looking, streak-free tan
- Allows sunless tanning without UV exposure
- Gives a healthy glow and even skin tone
- Can be used year-round for a bronzed look
- Buildable colour intensity depending on concentration
- Suitable for those who prefer to avoid direct sunlight
Best for
all skin types, pale skin, fair skin, sensitive skin
Where it comes from
Dihydroxyacetone is a simple sugar most commonly derived from plant sources such as sugar beet or sugar cane through natural fermentation processes using bacteria.