 Sensory neural hearing loss, SNHL, has been a global health issue for many years, but recent advances in research have led to promising treatments such as hair cell protection and regeneration. Clinical trials have shown that intracoclear and intradempanic applications are safe and effective when used as drug delivery methods. These findings suggest that regenerative medicine may be possible for SNHL in the near future. This article was authored by Mami Matsunaga and Takiyuki Nakagawa.