Dihydroxyacetone, often shortened to DHA, is the ingredient behind most sunless tanning products. If you use a self tanning mousse, lotion, mist, drops, or gradual tanning cream, there is a good chance DHA is what gives your skin that bronzed look without lying in the sun. DHA is a simple sugar based ingredient used as a color additive in sunless tanning products. The FDA allows DHA for external use in cosmetics, including sunless tanners and bronzers, but it should not be in