LeeYun Bio Co., Ltd. is a specialized R&D company that researches
and develops small-molecule compounds capable of improving quality of life.

• We target conditions that require treatment and long-term management, such as skin itching, inflammation, and pain. Our goal is to research ingredients that deliver high efficacy even in small amounts and commercialize them into products. Because these conditions require long-term use, safety is paramount. However, many existing high-efficacy treatments rely on immunosuppressants such as steroids or analgesics. LeeYun Bio applies compound synthesis technologies originally used in targeted anticancer drug development to skin diseases, developing small-molecule compounds that act on cellular mechanisms related to itching, inflammation, and pain—thereby expanding treatment and management options.