Background: Infantile Café-Au-Lait Spot (CALS) is a benign hyperpigmentary skin disorder that ranges in color from light brown to dark brown. Using traditional laser therapies including 532nm potassium titanyl phosphate(KTP) laser, 694nm ruby laser and 755nm alexandrite laser for infantile CALS treatment may provoke harmful side effects such as purpurae, crusts,Post-Inflammatory Hyperpigmentation (PIH), mottled hypopigmentation and scarring. Unfortunately, there is no clear standard for the laser treatment of infantile CALS because an infant is too young to receive laser treatment. Objectives: This study was performed to investigate the efficacy and safety of Dr. Hoon Hur’s Golden Parameter Therapy (GPT) with a high fluence 1064nm Q-switched Nd:YAG laser laser (QSNL) for infantile CALS treatment. Methods: Nineteen Korean patients with infantile CALS were enrolled in this study and treated with a 1064nm QSNL on a weekly basis for 20-50 treatment sessions of Dr. Hoon Hur’s GPT. The parameters were a spot size of 7 mm, a fluence of 2.2 J/cm2 and a pulse rate of 10Hz with one pass by a sliding-stacking technique over the infantile CALS. Results: After the final treatment, all of the 19 patients with infantile CALS were achieved the complete removal of pigmented lesions without any side effects such as purpurae, crusts, PIH, mottled hypopigmentation or scarring. No recurrences were observed in any of the patients after a follow- up of 6-14 months. Conclusion: We suggest that Dr. Hoon Hur’s GPT with a high fluence 1064nm QSNL is a safe and effective treatment for infantile CALS without causing side effects and recurrences. Keywords: Infantile Cafe au Lait Spot; 1064nm Nd:YAG laser; Dr. Hoon Hur’s GPT

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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.