Abib Glutathiosome Dark Spot Serum Vita Drop 50ml1. Improve in just 3 days : Powered by Glutathione, Niacinamide (Vitamin B3), and Vitamin C, this face serum helps fade dark spots, hyperpigmentation, and discoloration, leaving your skin visibly brighter and more radiant. 2. Fast Absorbing & Non Greasy Texture: The water based, lightweight formula absorbs quickly into the skin without leaving a sticky or oily residue, making it perfect for layering under moisturizers, sunscreen, and makeup. 3.