Keratex Cosmetic Hoof Filler is a fast and efficient means of invisibly mending unsightly cracks and holes in hoof walls. Use Keratex Cosmetic Hoof Filler to improve the appearance of hooves with missing and split horn. This product prevents dirt and stable moisture from getting into cracks and splits in the Horn where they can cause infection. Because it is self adhesive and flexible, Cosmetic Hoof Filler remains in place and grows out with the hoof.