Beauty of Joseon Calming Serum Green Tea Panthenol Soothing, Moisturizing Sensitive, Acne-Prone 30ml 1 fl.ozKey Ingredients 5% Panthenol (Vitamin B5) As a well known moisturizing ingredient, Panthenol is converted into vitamin B5 when absorbed into the skin. It binds strongly to moisture and prevents moisture from escaping, effectively keeping the skin hydrated 5% Panthenol (Vitamin B5) As a well known moisturizing ingredient, Panthenol is converted into vitamin B5 when absorbed into the skin. It binds strongly to moisture and prevents moisture from