LEADERS is a well-known Korean skincare brand whose best-selling sheet masks are a cult favorite among Asian skincare enthusiasts. LEADERS, founded in 2004 by two dermatologists, continues to expand their product catalog and introduce innovative products. LEADERS manufactures four key mask lines: INSOLUTION, MEDIU, LIFESOURCE, and AAPE (Advanced Adipose-derived stem cell Protein Extract). Each line focuses on a different skin concern, such as skin refinement, anti-aging, hydration, or brightness. LEADERS produces all of its products in Korea.