Keratex Mud Shield Powder is a handy, easy-to-use powder which you puff onto horse's legs for a cleansing and waterproofing action on legs which are prone to scabs and broken skin in wet and muddy conditions. This light talc will give your horse's legs a breathable, resilient coat of powder that does not absorb water (and therefore does not become sticky). It also works by making the leg hair so silky that mud cannot grip on to hair or soften the skin underneath.