MD Formulations Moisture Defence,Anti-Oxidant Hydrating Serum,Formulated to defend against dry skin by building and restoring your skin to its optimum moisture levels. Moisture Defense Antioxidant Hydrating Serum combines four powerful antioxidants to help defend against daily environmental stress, while natural botanicals provide soothing care. Natural Moisture Factors and advanced lipids restore vital moisture and rebuild skin barrier protection, providing smooth and supple skin. With continued use, fine lines diminish and moisture levels surge. Ideal for all skin types.