Tanning mousse is a body tanner that you spray on your skin to darken the tone. Just as with hair mousse, it has an airy, foamy consistency, and it dries quickly after being applied. It's best to apply the mousse with a tanning mitt to prevent streaking, according to St. Tropez. Within four to eight hours, the skin will darken to a golden hue. If you're pressed for time, there are even some tanning mousse options that give you results in as little as one hour, such as the Tanologist Express Self-Tan Mousse or the b.Tan Dark Self-Tanner Mousse, among others.
Before applying tanning mousse, it's important to prepare the skin by thoroughly cleansing and exfoliating it. You should also consider removing any body hair so that the tan has a smooth surface for application. Also, be sure to apply moisturizer to any particularly dry areas of your skin and wait for your skin to dry completely before applying self-tanning mousse.
After your skin has reached the desired tone, take a shower to wash off any excess product. In general, the longer you leave the mousse on, the darker the tan will be. However, you shouldn't exceed the product's recommended maximum wait time. If you do, you could end up with an unnatural or orange-looking tan.