Koala Dermatology & Cosmetic Dermatology Clinic Sangenjaya is a medical clinic located in Taishido, Setagaya-ku, Tokyo, offering pediatric dermatology services. The clinic was founded by Dr. Kazuya Arao, a board-certified dermatologist by the Japanese Dermatological Association, providing treatments that leverage his experience from university hospitals and cosmetic dermatology clinics. Treatment options include acne injections, treatment for spots, medical hair removal, HIFU, Botox, and care for alopecia areata, with insurance-based medical services also available. For acne treatment, the clinic actively performs local injections and uses oral isotretinoin (Acnetrent®) to strongly suppress sebum secretion from within. For alopecia areata, vitiligo, psoriasis, and other conditions, the clinic is equipped with UV therapy machines covered by insurance. Treatments are performed exclusively by expert nurses with experience in cosmetic dermatology, who make fine adjustments each time to suit the patient's skin type. The clinic supports English, accepts credit cards and electronic payments, and is equipped with barrier-free facilities. At the beginning of the month or for first visits, the original My Number card or eligibility verification certificate and medical certificate are required. Appointments are recommended, as a wait time of 30 to 90 minutes may occur without a reservation. A 24-hour online reservation system is also available.