Efficacy of 532-nm Nd:YAG Fractional Picosecond Laser with 9 mm High Coverage Handpiece Micro Lens Array in the Treatment of Facial Partial Unilateral Lentiginosis: A Case Report

This case report documents the successful treatment of facial partial unilateral lentiginosis (PUL) in a female patient using a 532-nm Nd:YAG fractional picosecond laser (FPL). The patient underwent four treatment sessions at four-week intervals with a 9 mm high coverage handpiece micro lens array. The treatment was well-tolerated and resulted in significant improvement in pigmentation without significant side effects. The study concludes that the 532-nm Nd:YAG FPL is an effective and well-tolerated option for treating facial PUL.