These patches can be used to hold down lower lashes instead of using tape. These patches are very thin and lint free with a tape like adhesive that is specially designed for eyelash extension application. The patches are pre-cut and are slightly curved to fit under the eye to cover all of the lower lashes. They have a smooth backing which which is lint free to help prevent any sticking of the lashes or glue. They remove easily so there is no tugging on the delicate skin in the under-eye area. These patches come in packs of 50 and do not have any collagen.