Dont know if you have tried the following but have posted just in case. Recently I mentioned on a thread something called dermacton, that someone tried and had really good results. Dermacton is for dogs, but I had remembered they also do a range of products for horses.

Amongst other products there is a Aromahell Mud and wet ointment for all mud and wet related problems and also Aromaderm Skin Lotion dont know whether you want to take a look just in case.

Aromesse Natural Animal Healthcare Products for Dogs, Cats and Horses

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