Horse First Hoof First's unique formula contains high strength Biotin with all the essential vitamins and minerals to produce a healthy hoof. It is well known that Biotin will grow horn. Hoof First grows hooves which are better for your farrier to work with, and fights problems such as thin soles, cracked, chipped or weak hooves, contributing to lost shoes which are costly. Feeding Guidelines Mix into damp feed: Horses - Add one 25g scoop to feed daily. Ponies and Foals - Add half a 25g scoop to feed daily. What's in it Biotin, Methionine, Lysine, Zinc, Copper, Vitamin B1. Size Guide Available in 750 Grams, 2 Kilograms, or 5 Kilograms.