How Often Should You Use a Vitamin C Serum?
For most people, using a vitamin C serum once daily in the morning is ideal. Start with every other day if your skin is sensitive, then increase frequency as tolerated. Consistency matters more than concentration, so apply 3–5 times weekly for visible brightening over 4–8 weeks. Why Vitamin C Serum Frequency Matters Vitamin C is one of the most researched skincare ingredients, loved for its ability to brighten dull skin, even out tone, and defend against environmental stressors. But like any active, how often you use it can make or break your results. Use it too rarely, and you may not see the glow you're after; use it too aggressively, and you risk redness, stinging, and a compromised skin…
