The GOLD Standard Vitamin C

Written By Danielle Diaz

What should you look for when choosing a Vitamin C serum? 

A topical Vitamin C antioxidant must be formulated properly in order to be effective. Skinceuticals was founded on academic research of Dr. Sheldon Pinnell, who established and patented the first formulation parameters required for Vitamin C absorption and efficacy in the skin. He and Skinceuticals research team helped pioneer the advent of cosmesceuticals with the development of the original topical Vitamin C formula.

These parameters came to be known as the Duke Parameters, the gold standard for effective delivery of Vitamin C to the skin.

The Duke Parameters

  • Formulated at an acidic pH.

  • Pure L-Ascorbic Acid

  • Formulated with a concentration between 10-20%

Danielle Diaz
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