1,3-Dihydroxyacetone dimer is widely used in the cosmetics and personal care industry, primarily as the active ingredient in self-tanning products. It reacts with amino acids in the dead skin cells of the epidermis to produce a temporary brownish color, mimicking a natural tan without exposure to harmful UV rays. This makes it a popular alternative for individuals seeking a sunless tanning solution. Additionally, it is used in formulations for bronzers, lotions, sprays, and mousses, providing a customizable and streak-free tan. Its stability and effectiveness in creating a natural-looking tan have made it a staple in the beauty industry. Beyond cosmetics, it is also explored in medical applications, such as camouflage creams for skin conditions like vitiligo, helping to even out skin tone and improve appearance.