I'm still putting just MTG on it...it hasn't gotten worse, but it isn't getting better...though it's only been 2 days (at least 2 days since I first saw it).
I did find a chuck of hair in the nearby pasture...but it was a different color...it seemed to be the right length and everything, but it was a sorrel/reddish color with a few black hairs in it...the mane, once pulled off, can't lighten in color, can it?
Dont know if anyone has mentioned it already but your horse may have sweet itch, its an irritaion caused by flies, but even if not sweet itch, a fly sheet and some sweetitch lotion will help a lot. It sooths irritated areas and also aids in repeling flies. Hope he comes good for you.
If it was a sweet itch wouldn't he seem to enjoy me itching it, and wouldn't I (more than likely) see him itching it once or twice?
It doesn't seem to be itchier than any other spot on his body...and nor have I seen him itch. I'll get some Sweet Itch medicine to see if that will work