Leaders Cosmetics is the world's leading and best-selling sheet mask brand. The company Leaders has a clinical background, it was founded in 2009 by dermatologists of the famous Seoul National University. Leaders operates clinics, and a research and development center for skin science. With its own clinics, research and development centers and manufacturing facilities, Leaders can offer the highest quality products on the market. The Leaders research and development team tests each product developed by the Leaders Dermatologist before being manufactured in one of Leaders' most modern facilities. You might think Leaders is just the right name. But what do we say, just try it out and become a fan.