By using vitamin C and vitamin E together, you can experience a stronger antioxidant effect. Vitamin E helps absorb vitamin C and removes reactive oxygen, which can boost the antioxidant effect of vitamin C. Vitamin Duo recommended by Dear, Klairs: Vitamin C Drop + Vitamin E Mask Transparently brighten your skin with the Freshly Juiced Vitamin Drop and coat your skin tightly with the Freshly Juiced Vitamin E Mask.  Experience clear, moisturized skin with the Vitamin Duo recommended by Dear, Klairs..