Selected by the Horse-Journal as "Editor"s Choice" and "2010 Product of the Year". Keratex Hoof Hardener Strengthens, Hardens & Protects Hooves. Keratex Hoof Hardener strengthens weak, worn and cracked hooves by improving the molecular structure of the horn itself. Equally effective in wet & dry conditions. Prevents the horn from taking in excess moisture, making it resistant to softening and weakening in wet conditions. This results in a reduction in shoe loss and abscesses. Keratex Hoof Hardener is not an oil or a resin layer and does not seal the hoof; it will ensure the treated hoof is able to breathe naturally. Moisture balance is properly maintained. Should also be applied to the sole of the hoof to prevent bruising. Keratex Hoof Hardener is a gentle-acting chemical formulation which forms additional intermolecular bonds between molecules of keratin through the process of cross-linking. Keratin is the main protein constituent of horn and is best described as the building block of the horn structure. The cross-linking process results in additional atoms being distributed between the keratin molecules to produce a tougher and stronger horn structure. Many other products claim to strengthen the hoof, but usually this entails a superficial layer of resin or varnish. Keratex Hoof Hardener works by actually improving the structure of the horn itself. Since Keratex Hoof Hardener is neither a varnish or resin layer, it leaves no visible coating. Therefore the treated hoof is able to breathe and function naturally. Water and ammonia damage the structure of the keratin molecule and how they interact with each other. This is, and always will be, a major problem for horse owners. The scientists at Keratex spent many years researching ways to rebuild the damaged molecular structure of hoof horn. The result of this research was Keratex Hoof Hardener. Because of its unique nature, Keratex was granted a Patent. Keratex Hoof Hardener is the only truly effective hoof hardener.