Brightening Vit-C Hydra Gel Eye Patches with vitamin C are hydrogel eye masks, to enhance brightness and reduce signs of aging such as: dark circles, puffiness, discoloration, fine lines and wrinkles. How to Use Open the single-dose package (1 pair) and apply to clean skin in the area under each eye. Leave for 20-30 minutes. Remove the patches and dab the excess product with your fingers until it is removed. Apply at least 3 times a week or as often as needed.