SkinCeuticals C E Ferulic

SkinCeuticals C E Ferulic is a serum many dermatologists rate highly. It pairs 15% pure L-ascorbic acid — one of the most researched and active forms of vitamin C — with 1% vitamin E and 0.5% ferulic acid, a trio SkinCeuticals says stabilises the vitamin C and boosts its antioxidant protection. The low pH helps the L-ascorbic acid stay active, and the brand positions it for the brightening, firming and daytime environmental-protection benefits that cheaper serums only gesture at. The trade-offs are real: at around £169 for 30ml it is very expensive, the slightly viscous texture and hot-dog aroma divide opinion, and once opened it should be used within a few months before it starts to oxidise. If budget is no object and you want one of the most proven formulas on the market, this is it.