Hydration SerumDescription This hydration boosting serum will not disappoint! Glycerin is the active ingredient that holds extreme moisture in the skin throughout the day, fortifying your skins moisture barrier to tackle environmental stressors. Using glycerin also helps improve your skins youthful look as time passes and retains its natural resiliency and bounce. In addition, cassia obtusifolia seed extract is a rich source of antioxidants that your skin will love.