iS CLINICAL Hydra-Cool Serum Professional 2oz Retails for $83 Expiration 01/2026 NWOB Hydra-Cool Serum is formulated to rejuvenate, hydrate, and visibly soothe the skin. This refreshing, powerful serum combines superior antioxidants with essential botanicals and bionutrients. Hydra-Cool Serum is designed for all skin types and for all ages, and is gentle enough for even the most sensitive skin. Apply a small amount to the palm of hand. Using fingertips, dab and smooth evenly over face and neck. Serum may be used by itself or layered with other iS Clinical products. Mix 1-2 drops of serum with your foundation before applying to achieve a dewy glow.