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Skincare Science · 5 min · 2026-04-22

How Vitamin C Actually Works (And Why Most Brands Get It Wrong)

Stability, concentration, pH, the three things that decide whether your serum brightens or oxidizes in the bottle.

How Vitamin C Actually Works (And Why Most Brands Get It Wrong)

Vitamin C is the most studied skincare ingredient on earth, and the most poorly formulated. Here's what to look for...

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