Vitamin C Oxidation: Why Your Serum Turns Brown & How to Stop It
Why Your Vitamin C Serum Turns Brown (And How to Stop It) Vitamin C is often called the “Holy Grail” of skincare for its ability to brighten skin, fade dark spots, and boost collagen. However, if you’ve ever noticed your clear serum turning a dark amber or brown, you’ve witnessed Vitamin C oxidation. When Vitamin…
