When it comes to skincare, timing can make a difference. Discover when to use Vitamin C, where it belongs in your routine, what ingredients work well with it, and how to get the most from this powerful antioxidant. Vitamin C has become one of the most popular ingredients in modern skincare — and for good reason. From helping skin look brighter and more even-toned to supporting collagen production and defending against environmental stressors, this antioxidant is a valuable addition to many skincare routines.