DHA or Dihydroxyacetone is a carbohydrate derived naturally from sugar beet and is commonly used in sunless tanning products. Although DHA is colourless, once applied to the skin a chemical reaction takes place between the DHA and the amino acids in the epidermis, resulting in a brown tint which becomes the tan.
As the dead skin cells naturally shed every week, this removes or ‘fades’ the tan. DHA is one of the safest ways to artificially tan the skin and is less damaging than sun bathing. You can find it in self-tanning products like lotions, creams and gels that can be applied all over the body and face.