Can horses have dandruff? If so how can you get rid of it
It's kind of like dandruff... Dead skin cells, sand, dirt, etc. if its in the mane area, scrub the base of the mane with your curry comb. On the body, vigorous currying or a vacuum with a curry attachment.
I don't think it's dandruff but more like dust, dirt, and rain caked into there coat. If you want you could give your horse a bath and that should help a little :)
Call a vet
They can have something very similar. You can buy products/oils that help get rid of it or moisturizing conditioner. Im trying to get rid of my horses too. Good luck