He is fed "black as knight" supplement. I have tried different fly sprays with the same thing so I know it's not the fly spray. I do not use show sheen or any other products on him besides the fly spray. He is bathed no more than once a month and it's with a few drops of human "moisturizing" shampoo deluted with a gallon of water. Same routine as all of my other horses. Even his forelock just looks like a black dust bunny...no shine no nothing.
Any ideas on how to fix this before show season next year? He's the horse in my avatar btw.