As for the tail, I love Infusium 23!!
As for the feet, I think people need to stop attacking the OP in this thread. We don't know her unique situation at all. My mare is barefoot and has been her entire life without issue, although I do get her feet trimmed every 6-8 weeks by the farrier. BUT that doesn't mean that's how EVERYONE needs to handle their horse's care, so I'm not going to pass judgement on you as a person or a horse owner