This hydrating, cooling serum is formulated with NEOSTRATA Bio Calm Complex, a proprietary blend of ingredients to target blotchiness and soothe skin that is prone to sensitivity. This complex contains PHAs, known to strengthen the skin's moisture barrier, with antioxidant extracts to help protect against drying environmental stressors. soothing serum improves skin resiliency and helps neutralize the appearance of facial blotchiness. Gluconolactone (PHA): is found naturally in the skin and provides antiaging and gentle exfoliating benefits without sun sensitivity. Sensitive skin types as well as those who have had recent superficial cosmetic procedures will find comfort in this molecule's gentle nature. Gluconolactone strengthens the skin's moisture barrier leaving it more resilient, while also providing potent antioxidant benefits. Lactobionic Acid (PHA): is a part of the PHA family and are also non-irritating. These patented ingredients are also known as "Bionic Acids" and are derived from natural sugars. they help to reduce the appearance of lines and wrinkles, discoloration, enlarged pores and roughness through gentle exfoliation. The Bionics are potent antioxidants that have been shown to target naturally occurring, skin degrading enzymes to help maintain a youthful look. Suitable for Reactive, Sensitive Skin.