What is Dihydroxyacetone

Dihydroxyacetone (DHA) is currently the most popular way of gaining a tan-like
appearance without sun exposure as it carries less health risks than any of the other
available methods. To date, it is the only active ingredient approved by the US Food &
Drug Administration (FDA) for sunless tanning. when applied to the skin causes a
chemical reaction with amino acids in the surface cells of the skin producing a
darkening effect DHA does not damage skin as it only affects the outermost cells of
the epidermis (stratum corneum).
Fake tanners, sunless tanners or preparations used to imitate a tan are becoming much
more popular as people are becoming more aware of the dangers of long term sun
exposure and sunburn. DHA is a hygroscopic white crystalline powder. It has a sweet
cooling taste and a characteristic odor. It is the simplest of all ketoses and, having
no chiral center, is the only one that has no optical activity. The normal form is a
dimer which is slowly soluble in one part water and 15 parts ethanol. When freshly
prepared, it reverts rapidly to the monomer in solution. The monomer is very soluble
in water, ethanol, diethyl ether and acetone and toluene. The sunless tanner
dihydroxyacetone (DHA) is currently the most popular way of gaining a tan-like
appearance without sun exposure as it carries less health risks than any of the other
available methods. To date, it is the only active ingredient approved by the US Food &
Drug Administration (FDA) for sunless tanning.

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