Favorite Vitamin C Serum My favorites Skinceuticals C E Ferulic: wins the battle. EVERY. TIME. Extensive research but expensive. Silymarin CF is a great option for those with oily/acne prone skin. I transition to Phloretin CF during summer to target pigmentation, also less sensitizing compared to the CEF. DRMTLGY's CEF: For what I have tried, it’s 2 in quality but for the price, it’s still my 1. Comparable to Skinceuticals C E Ferulic. (20% off with code "ZIONK") back in stock!! Murad Vita-C Glycolic Brightening Serum: one-of-a-kind L-ascorbic acid formulated with glycolic acid to enhance vitamin C delivery. The dual-airless chamber delivery system keeps the vitamin C stable in its active form for optimal efficacy.Avoid other use of aha/bha. Has a mild onion-breath like scent? Goodal Green Tangerine Serum: gel-like serum, favorite K-beauty staple. Also packed with arbutin, niacinamide, cica, and green tea to help fight pigmentation head-on. Compared to other serums, scent is gracious. Mentions: obagimedical 20% isclinical clinical pro-heal kiehls corrective dark spot soln lorealusa revitalift LTKunder100 LTKunder50 LTKbeauty