Learn about the Garnier Fast Bright Hyperpigmentation Ampoule Serum Monodose, one of the newest additions to the Fast Bright Vitamin C Range. clinically demonstrated to brighten skin and significantly lessen hyperpigmentation. The potent combination of 3% vitamin C and niacinamide, which is designed to jointly visibly reduce hyperpigmentation* and dark spots, works best from the very first dosage. Hyperpigmentation*, which includes dullness, uneven skin tone, dark spots, age spots, and undereye dark circles** based on basis color intensity, disappears in as little as 6 days. Visible reductions in dark spots** and dark eye circles** are also observed. Note: Individual outcomes may differ, based on actual clinical pictures. 43 participants in a clinical study; vitamin Cg is a derivative of vitamin C.