Dehydroxiacetone (dha) the best self-tanning active ingredient available. A natural sugar without any side effects. And with these additional properties: pigmenting property reacts with the proteins in the top layer of the epidermis, providing a similar coloration to the sun tan. Transcutol - a very powerful agent of penetration which helps the reaction of dha. Filmougeneous polymer (ucon) - adds moisturizing and emollient properties.