Science

This lightweight antioxidant serum combines 0.2% ferulic acid with 10% pure vitamin C (l-ascorbic acid) for enhanced antioxidant performance. 

 It is formulated under the Duke Antioxidant patent. Vitamin C is a highly-potent antioxidant that is, by its structure has, difficultly being to effectively absorbed bydeliver on skin. The Duke Antioxidant patent describes outlines the formulation parameters required for effective delivery of vitamin C to skin: 1) pure l-ascorbic acid (vitamin C); 2) an acidic pH within the 2.0-3.5 pH range and; 3) a concentration between 10%-20%. SkinCeuticals is the only brand to formulate antioxidants according to these parameters.

In the morning after cleansing, apply 4-5 drops of this antioxidant serum to a dry face, neck, and chest before other skincare products. May also be used on backs of the hands.

It is normal for vitamin C products to darken after opening due to air and light exposure. The formula will remain effective. Once opened, it is recommended to be used within 3 months of opening. 
Complete your regimen with a SkinCeuticals sunscreen. When used together, SkinCeuticals antioxidants and broad spectrum sunscreens provide more comprehensive protection against visible aging caused by environmental aggressors.
  

10% L-ascorbic acid: Lauded for its superior antioxidant benefits, this highly potent form of pure vitamin C helps neutralize free radicals and protect against oxidative stress while providing visible anti-aging benefits.   

0.2% ferulic acid: A plant-based antioxidant, ferulic acid neutralizes free radicals and enhances the antioxidant benefits and stability of vitamins C.
 

                Normal
                Sensitive
            

                Sensitized
                Acne
                Aging
            

•  Gentle Cleanser
•  Phyto Corrective
•  Triple Lipid Restore 2:4:2
•  Sheer Physical UV Defense SPF 50
•   AOX+ Eye Gel
•  Antioxidant Lip Repair

•  Provides advanced antioxidant protection to help prevent premature signs of aging caused by free radicals
•  Improves the appearance of fine lin  es and wrinkles
•  Enhances radiance
•  Formulated at a precise pH and concentration for optimal absorption•  Once absorbed, this serum’s benefits remain effective for up to 72 hours
•  Paraben-, alcohol-, dye-, fragrance-, gluten-,  and silicone-free