Beauty of Joseon Calming Serum: Green Tea + Panthenol effectively soothes damaged, sensitive skin while preventing skin aging to restore healthy, youthful skin. Formulated with 76% Green Tea Extract, 2% Panthenol and Vitamin C to offer calming, moisturizing, anti-aging and brightening effects; and restore a clear, healthy and youthful complexion. Green tea, rich in antioxidants, helps reduce sebum and oil production. In addition, it soothes and evens skin tone. The main component of green tea, EGCG (catechin), is composed of tannins and polyphenols. It is known to effectively improve skin damaged by UV rays.