People just can't seem to get away from the idea that a tan is healthy and beautiful, and so you have self-tanning lotions and tanning salons. The lotions are harmless, but they never quite look like a natural tan to me. Fortunately, these days there are improved formulas that at least don't make you look streaked with orange. The new products are made with dehydroxyacetone, which interacts with proteins in the surface cells of your skin to darken the color.
Some people complain about a slight chemical or metallic scent, but that goes away in a few hours.
To avoid blotches, you need to be careful when applying the lotion. First, get rid of dry, flaky skin with a sponge or washcloth. Remove your rings and other jewelry, and apply the tanner lightly just like you would a body lotion, blending well. Put only a little on your knees and elbows - the dry skin will absorb more color than the rest of your body. Try not to get the lotion under your nails because it will discolor them, and wash your hands immediately so your palms don't look unnaturally tan.