Self-tanners are cosmetic products designed to give the skin a sun-kissed glow without exposure to harmful ultraviolet (UV) rays. They typically contain an active ingredient called dihydroxyacetone (DHA), which reacts with the amino acids in the skin's outer layer to produce a temporary tan. Self-tanners come in various forms, including lotions, sprays, and mousses, allowing users to choose their preferred application method. These products are popular for their convenience and safety compared to traditional tanning methods. Self-tanners can be applied at home and provide a more even color than sunbathing or tanning beds. However, results can vary based on skin type and application technique, so it's essential to follow instructions for the best outcome.