Posch Care Vitamin C Serum is an exceptionally stable formulation that is derived with Ethylated Ascorbic Acid that offers a direct approach to bright and glowing skin. It is saturated with Hyaluronic acid that provides multi-depth hydration within the deep layers of the skin. It is further supported by Vitamin B3 which contributes to the skin by balancing the sebum activity of the skin and supporting the structural and functional integrity of the skin.