Light therapy—also known as phototherapy or LED light therapy—is a treatment that uses controlled wavelengths of light to improve skin health and appearance. Different colors of light penetrate the skin at varying depths to trigger natural biological processes. In aesthetic skincare, light therapy is commonly used for: Reducing acne: Blue light kills acne-causing bacteria and helps calm inflammation. Anti-aging: Red and near-infrared light increase collagen and elastin production, softening fine lines and improving skin firmness. Skin healing and recovery: These wavelengths speed up cellular repair, reduce redness, and improve circulation