The highest concentration of stable vitamin-C available, Serum 20 is formulated at the precise concentration proven to deliver maximum amounts of vitamin-C to the skin, providing you with the highest levels of anti-aging protection.

Directions: Once daily, using fingertips, apply 4-5 drops of Serum 20 to face, neck and chest. Follow with Skinceuticals Hydrating B5 Gel and a moisturizer of choice.

Caution: You may experience a slight tingling sensation when using this product. This sensation is normal and will deminish with time. Avoid direct contact with the eyes. Store in a cool dark place.

Ingredients: Water, L-Ascorbic Acid, Zinc Sulfate, Phenoxyethanol, Bioflavonoids, Sodium Hyaluronate

Note: The vitamin-C in Serum 20 will oxidize and darken with time. This oxidation is natural and will not significantly alter the effectiveness of this product.

Content: 1 fl oz


Price: $