MTG works miracles! Its the only product that I know of that works real well, but boy does it work! Original M-T-G (Equine - Grooming - Horse Shampoo Conditioner - Conditioners)
I love the stuff! It does stink something awful but I just wear gloves when applying it, you should be able to get it at any like tractor supply or fleet farm.
I swear by the stuff! Im using it right now on my paint geldings mane (he got really sick in the spring and started to loose his mane) - his tail (got put with a young horse at my barn and that horse ended up being a tail chewer. Caught it early tho so I am just using it on the base of his tail and its working great) - and on a spit on his leg where he nicked it on the feeder. I love the stuff!