Timeless 20% Vitamin C + E Ferulic Serum vs e.l.f. Skin Bright Icon Vitamin C Serum

Buy the Timeless serum if you want the strongest, most proven antioxidant formula and your skin tolerates L-ascorbic acid. Buy the e.l.f. Bright Icon if you have sensitive or oily skin, want a lighter non-greasy finish, or prefer a more stable vitamin C derivative. Timeless uses 20% pure L-ascorbic acid with vitamin E and ferulic acid, the classic Skinceuticals-style combination, and owners rate it highly at 4.7 from over 10,000 ratings. e.l.f. uses 15% 3-O-ethyl ascorbic acid, a gentler derivative, plus bisabolol for soothing, and scores 4.4 from about 2,480 ratings.

• Choose the Timeless Skin Care serum if you want maximum brightening power from 20% pure vitamin C and your skin is not easily irritated.
• Choose the e.l.f. Bright Icon serum if you have sensitive or oily skin and want a lightweight, non-comedogenic formula that is less likely to sting.