Vitamin C serums are an excellent investment because they protect you from pollution and UV rays, and might even help reverse skin damage, per Byrdie. In fact, Byrdie's ideal vitamin C serum for sensitive skin is Drunk Elephant C-Firma Fresh Day Serum because it has pumpkin and pomegranate enzymes to gently exfoliate the skin. Plus, it has ferulic acid to protect against sun damage. This serum can soothe the most irritated skin, making it a perfect choice if you struggle with sensitivity.

Who What Wear is a huge fan of TruSkin Vitamin C Serum, a best-seller on Amazon with over 95,000 reviews. It combines vitamins C and E with hyaluronic acid, aloe vera, and jojoba oil to prevent premature aging and neutralize free radicals. Allure, on the other hand, recommends Paula's Choice Super Antioxidant Concentrate Serum because it has another stable form of vitamin C called tetrahexyldecyl ascorbate, which promotes younger-looking skin. It also has peptides and ceramides to soothe and repair the skin barrier.

Finally, Glamour loves the derm-approved drugstore item L'Oréal Paris Revitalift Derm Intensives Vitamin C Face Serum because it has a lower concentration of vitamin C. It has just enough — 10% — to be effective without being irritating, and its additional hyaluronic acid helps with hydration. No matter which you choose, just always remember to use SPF, too.