Originally Posted by My Beau
I've always been told the hair only has a chance of regrowing in white if the follicle is damaged. That would require a blanket rub so severe the shoulder bleeds or is raw. 99% of the time it's just rubbed off/broken hairs.
Mine has a white spot and never was raw or damaged before. Just showed up.
Also if you have a breed of horse that is not to have white on it's body the rules state the exception for white from blanket rubs.
Some of my blabk horses have turned white where it looks like another horse may have bit them.