Unlike other hardeners, the Keratex Hoof Hardener formula is patented and includes a unique flexibility agent as well as a hardening agent, making this the perfect product to protect your horse from: brittle, cracked, soft or weak hooves, soft, sensitive or thin soles, repeated shoe loss, transition to barefoot, hoof damage. Keratex Hoof Hardener has been proven to improve hoof quality in short and long term use. One 250ml bottle lasts for around three months, application brush supplied.