Partial unilateral lentiginosis (PUL) is a rare pigmentary skin disease characterized by numerous smallagminatedbrown macules on an area of normal skinconfined to only one side of the face or body andalmost always starts in childhood, rarely at birth.Treatment of PUL isnecessary for cosmetically disfiguring feature. Howevertreating the PUL with outside effects such as purpura, crust, postinflammatory hyperpigmentation, mottled hypopigmentation, scarring and recurrences is extremely difficult. Therefore, the authors introduce a newtreatment of PUL using Dr. HoonHur's Golden Parameter Therapy (GPT) with a high fluence 1064nm Q-switched Nd:YAG laser (QSNL) without any side effects and recurrences.In this paper, Dr. HoonHur'sGPT with a high fluence 1064nm QSNL proved to be a safe and effective treatment for PUL. We propose that Dr. HoonHur'sGPTwith a high fluence 1064nm QSNL is a new and good option for treating PUL.