Formulated with a combination of Vit C Serum 11S (11% derived stable vitamin C), azelaic 20 (Azelaic acid 20% + Alpha Arbutin 5%), this system helps to reduce discoloration, even skin tone and protect the skin structure from free radicals. The addition of DermShieldTM allows the cream to be used without the usual side effects, and it features a higher efficacy than 4% hydroquinone.