Bioten Glow Expert 4D hydrogel eye patches with 97% ingredients of natural origin are enriched with niacinamide and tranexamic acid. Niacinamide, one of the most powerful antioxidant vitamins, helps brighten and revitalize the eye area. Tranexamic Acid, a highly effective brightening amino acid, gives the skin under the eyes unparalleled brightness. Ophthalmologically tested. 1 pair per pack. PROVEN EFFECTIVENESS: They brighten the under-eye area and help reduce dark circles and bags under eyes. (Tests in vivo/self-evaluation).