My horses get like that over the winter if they aren't constantly braided. So I found out there is not much you can do to fix it unitl you can give them a bath. I use the same shampoo on their mane as their body normally cowboy magic. I get the mane wet scrub in shampoo and let it sit while I do the horses whole body then I rinse off the mane last. I also use conditioner on the mane and tail.
It is not just a horse,
It is the one thing that keeps me from being just a girl