It did nothing for Maiden's feet. If anything they got worse! Although that could have been the drier weather... anyway I am now using Cornucrescine (on coronet band) and biotin (in food) to get her hooves to grow better, to stop the damn things from getting bad in the first place rather than harden them once they're cracking.
Oh and I can't stand the smell of Keratex, but I acutually am coming round to the Cornucrescine smell!