Sunless tanners are products designed to give the skin a bronzed appearance without exposure to sunlight or UV radiation. They typically contain an active ingredient called dihydroxyacetone (DHA), which reacts with the amino acids in the skin's outer layer to create a temporary tan. These products come in various forms, including lotions, sprays, and wipes. Using sunless tanners can help reduce the risk of skin cancer and premature aging associated with excessive sun exposure. They are available in different shades to suit various skin tones, allowing users to achieve a natural-looking tan without the harmful effects of tanning beds or direct sunlight.