This breakthrough antioxidant serum is a proprietary formulation that achieves 360-degree skin support against environmental stressors in all compartments of the skin. Alto Defense Serum from skinbetter science combines vitamin C and 18 additional antioxidant ingredients to improve the visible appearance of uneven tone and redness. Type Serum Ingredients Caffeine, Vitamin C, Peptides, Ceramide Benefits Antioxidant protection from oxidative stress, Combines Vitamin C + 18 additional antioxidant ingredients., Enhances vitality and improvement in skin tone and luminosity., Reduces the appearance of skin redness Usage • Apply a thin layer morning and evening to face, neck and décolleté • Use of sunscreen is recommended daily Suitable for All skin