Located in Kojimachi, Chiyoda-ku, Tokyo, 'Hada no Clinic Kojimachi' is a clinic specializing in cosmetic dermatology. Its most notable feature is being the first in Japan to introduce isotretinoin (Acnetrent), a medication for acne treatment. Director Dr. Iwahashi, also known as the 'Acne Master,' advocates treatment policies based on medical evidence and actively shares information about acne causes and solutions. For acne treatment, the clinic has established a system to safely proceed with treatment through regular examinations and blood tests each time oral medication is prescribed, while monitoring effectiveness and side effects. Additionally, the clinic offers a wide range of cosmetic medical services including Botox injections and scalp micropigmentation, addressing concerns such as thinning hair and visible part lines. Consultation hours are from 11:00 AM to 7:00 PM (10:00 AM to 6:00 PM on weekends), and the appointment-only system ensures minimal waiting time. Credit cards, debit cards, and electronic payments are accepted for added convenience. The clinic is closed on public holidays and during the year-end and New Year period (December 29 to January 5).