WHY PYUNKANG YUL? - Along with know-how recipe of Pyunkang Yul Eastern Medicine Clinic, specialized in treating skin and respiratory diseases for about 50 years, the calming serum helps to calm angry skin comfortably by carefully selected ingredients found in nature and rigorous testing. | NO HARMFUL SUBSTANCES - Calming Serum has a mild, low pH formulation similar to that of smooth healthy skin and as a strict vegan certified product, has completed skin irritation test with zero-irritation result; in addition, all ingredients are in EWG safety grade | SUITABLE FOR ACNE-PRONE AND SENSITIVE SKIN TYPES -Through Centella Asiatica extract (also called as Cica or Madecassoside), Tea Tree and Lonicera Japonica Flower Extract, known as a representative soothing ingredient, that quickly calms angry skin in a healthy way and controls excess sebum also moisturizes irritated skin without worrying about irritation | ULTIMATE HYDRATING - 2 Peptides give strong moisturizing power to sensitive skin from external stimuli, Ceramide and 5 Hyaluronic Acids strengthen the moisturizing barrier and provide deep hydrating feeling, leaving the skin revived | LIGHT AND REFRESHING TEXTURE - The serum is refreshingly absorbed into the skin without feeling stickiness, delivering the comfortable mosisturizing care with a great soothing effect