Best Vitamin C Serum for Hyperpigmentation (Top 5 Picks)
Vitamin C is one of the most powerful ingredients for fading dark spots, sun damage, and uneven skin tone. But not all serums are created equal—some oxidize quickly, while others contain forms of vitamin C that barely penetrate the skin. If you’re serious about treating hyperpigmentation, you need a serum with stable, potent vitamin C combined …