Vitamin C has become a staple in skincare for its ability to brighten skin, reduce hyperpigmentation, and support collagen production. It also neutralises free radicals from UV light and pollution, making it a key part of morning routines alongside SPF. However, not all formulas suit every skin type, especially those with sensitive or reactive skin.
Pharmacist and skincare expert Dr Sonal Chavda-Sitaram advises that individuals with sensitive, reactive, or rosacea-prone skin should approach L-ascorbic acid carefully, as it can trigger inflammation. For these skin types, lipid-soluble derivatives like tetrahexyldecyl ascorbate (THD ascorbate) are recommended, as they penetrate deeply without irritation.
After testing 15 vitamin C serums over four months, the overall winner is CeraVe Skin Renewing Vitamin C Serum. For budget-conscious shoppers, Elf Skin Brighten + Glow Vitamin C + E + Ferulic Serum is recommended. SkinCeuticals C E Ferulic Antioxidant Treatment offers excellent protection, while Indē Wild Vitamin C Sunrise Glow Serum targets hyperpigmentation. Haruharu Wonder Centella 4% TXA Gel Serum is the top Korean option.
The testing process considered texture, scent, feel on the skin, wear under makeup, visible results, and value for money. Additional ingredients like vitamin E and ferulic acid, which enhance UV protection, were also noted. Packaging was crucial, as L-ascorbic acid oxidises rapidly; airless pump bottles and stabilising antioxidants were prioritised.
Vitamin C works through three mechanisms: antioxidant protection, collagen synthesis, and brightening by inhibiting tyrosinase. While all skin types benefit, those with photo-aged skin see the most dramatic results. The key is matching the form, concentration, and supporting ingredients to individual tolerance.
