what are the best vitamin c serums?
['SkinCeuticals CE Ferulic. ... ', 'Maelove Glow Maker. ... ', "Revitalift Derm Intensives Vitamin C Serum by L'Oreal Paris. ... ", 'Drunk Elephant C-Firma™ Day Serum. ... ', 'Clinique Fresh Pressed 7-day System with Pure Vitamin C. ... ', 'PCA Skin C&E Advanced Serum. ... ', 'SkinCeuticals Phloretin CF.']