Which skin type is it good for? Normal Oily Combination Dry A water- and silicone-free stable suspension of 23 percent pure l-ascorbic acid. Solutions for: - Uneven skin tone - Fine lines and wrinkles If you want to know more… Vitamin C is an effective antioxidant and its pure form of l-ascorbic acid has been shown to improve multiple signs of skin aging while brightening the skin. What it is formulated WITHOUT:- Parabens- Sulfates- Phthalates. This product contains a 23 percent concentratio