Melanin pigment treatment is based on the principle of selectively destroying melanin using lasers with high power density and short pulse durations, with nanosecond Q-switched and picosecond lasers being commonly used. During laser irradiation, melanin absorbs energy, forming plasma that generates heat in the surrounding tissue and creates vacuoles. In hair removal, melanin in hair structures absorbs heat, leading to follicle destruction, while precooling is applied to minimize side effects in pigmented lesion treatment. The photoconductivity of melanin and the anti-inflammatory effects of radiofrequency (RF) therapy reduce pigmentation and inflammatory responses, enhancing skin protection. Melanin production is activated by UVR exposure as a protective mechanism; however, excessive melanin may lead to hyperpigmentation-related skin disorders. Intense pulsed light (IPL) targets melanin for aesthetic treatment, reducing freckles and wrinkles. Laser treatments include long-pulse, Q-switched, and picosecond lasers, while fractional lasers and HIFU target specific wavelengths to achieve pigment removal. HIFU also stimulates collagen and elastin production, improving skin elasticity.