The e.l.f. SKIN Bright Icon Vitamin C + E + Ferulic Serum is new to the brand’s lineup (which, ahem, I’ve tested most of). It contains 15% of the superstar ingredient vitamin C, along with ...

C E Ferulic, which hit the market in 2005, is 15% L-ascorbic acid, or pure vitamin C, with vitamin E and ferulic acid. Dr. John Carroll Murray, a dermatologist at Duke University who authored a ...