Keratex Hoof Putty. The Keratex Hoof Putty is a flexible semi permanent wax that can be used to plug holes in the sole of the hoof. The Hoof Putty can help prevent injuries and irritation caused by grit, mud and stones entering cavities in the sole of the hoof and also forms a barrier against bacteria. Hoof Putty can aid in speeding up recovery from abscesses, punctures and cavities and can also be used under laminitics Lilypads to provide extra cushioning and comfort.