Becker's nevus, a cutaneous hamartoma, usually occurs as a large, unilateral, hyperpigmented and hypertrichotic patch on the shoulder or upper trunk, which can be present in childhood or adolescence. Becker's nevus can be treated with traditional laser therapy using various types of lasers including a 532nm potassium titanyl phosphate (KTP) laser, 694nm ruby laser and 755nm alexandrite laser. However, this may cause harmful side effects such as scarring, mottled hypopigmentation, post-inflammatory hyperpigmentation (PIH), purpurae, and crusts. As a result, no standard for the treatment of Becker's nevus using lasers has been established. Therefore, this study was implemented to investigate the safety and efficacy of treating Becker's nevus using Dr. Hoon Hur's Golden Parameter Therapy (GPT) followed by Dr. Hoon Hur's Optimal Melanocytic Suicide-1 Parameter Therapy (OMS-1 PT) which uses a high fluence 1064nm Q-switched Nd: YAG laser (QSNL). Forty-two Koreans suffering from Becker's nevus participated in the study and received treatment on a weekly basis for 75-100 sessions using the QSNL according to Dr. Hoon Hur's GPT then followed by Dr. Hoon Hur's OMS-1 PT. The parameters for this study were a spot size of 7 mm, a fluence of 2.2 J/cm 2 and a pulse rate of 10 Hz using a sliding-stacking technique for a single pass over the Becker's nevus, followed by Dr. Hoon Hur's OMS-1 PT using a sliding technique for 5 passes with the QSNL over the Becker's nevus. Upon completion of the last treatment, all 42 patients with Becker's nevus were cured, having no side effects, and entirely removing the pigmented lesions. None of the 42 patients reported any recurrences after their follow-ups 6-15 months after the final treatment. As a result of this study, we propose therapy to safely and effectively treat Becker's nevus using a fusion of Dr. Hoon Hur's GPT and Dr. Hoon Hur's OMS-1 PT with a high fluence 1064nm QSNL to avoid any recurrences or harmful side effects.