Successful Treatment of Freckles Using a 730-nm Picosecond Laser: A Prospective Study

Freckles are common hyperpigmented diseases that commonly occur in Caucasians and Asians. Freckles often cause cosmetic and even psychosocial concerns. Various lasers with different wavelengths have been used to treat pigmented spots. This study aims to evaluate the efficacy and safety of a novel 730-nm Ti: Sapphire picosecond laser in the treatment of freckles in Chinese patients.