Spray tanning, also known as airbrush tanning or sunless tanning, is a kind of self tanning where a fine mist containing a tanning agent is sprayed on to the body. This mist has a bronzer in it called Dihydroacetic Acid (DHA). The bronzer will settle on your skin and settle quickly, creating the color change. The effect is almost instant, so you can have several sprays and still be a day or two away from looking completely natural. Spray tanning can be used by both men and women, although men tend to prefer the airbrush tan as it is less noticeable than a lot of browsers used for women.