How Vitamin C Brightens Skin Tone (Melanin Regulation, Oxidative Stress & Skin Clarity Explained) Vitamin C is widely described as a “brightening” ingredient — but that word is often misunderstood. Many people expect Vitamin C to fade dark spots quickly or visibly lighten skin within days. When that doesn’t happen, they assume the product isn’t … Continue reading How Vitamin C Brightens Skin Tone (Melanin Regulation, Oxidative Stress & Skin Clarity Explained)