According to the American Academy of Dermatology the most effective sunless tanning product available today is dihydroxyacetone (DHA). As the colorless sugar interacts with the dead skin cells located in the outer layer of the epidermis, a color change occurs which usually lasts about seven to ten days from the initial application. Self-tanners should not be confused with bronzers which can be found in powder or cream form and, unlike self-tanners, can be instantly removed with soap and water. Erythrulose is another self-tanning agent that produces in combination with DHA a natural, deep & even tan without stripes (DHA alone may create an orange tone & stripes). Erythrulose prolongs the tan & leaves the skin less dry.