This anti-oxidant rich, fortifying serum is formulated to help defend the skin barrier against pollutants and environmental aggressors. Formulated with the highest concentration of Alguronic Acid from algae, our benefit-boosting ingredient, this fortifying serum combines with nutrient-rich niacinamide (Vitamin B3) and an anti-oxidant power house: Phloretin (from apple wood) and Ergothioneine (from mushroom). Skin barrier is fortified to help improve the appearance of dullness, redness, discoloration, lines, and skin tone. 30 mL.