This exclusive formula, used to strengthen horses" hooves, provides human nails with the essential ingredients they need to grow longer and stronger. Use twice daily over and around the nail.Helps nails grow stronger. Formaldehyde Free Originally created to condition the hooves of thoroughbred racehorses, this trusted formula helps nails grow healthier and stronger while resisting splits, peels and breaks. For beautiful nails and optimum results, massage Nail Strengthener Cream over nails and cuticles, daily, even over nail lacquer.