so far this past week I've cut out the mollasses from his feed, started putting a slinky on him and have been fly spraying him all over including through his mane every night. I have seen less rubbing and hair fall.
for the mane itself I gave it a hot oil treatment for human hair lol it was all terrible looking and dry as well so I gave it a good condition and then the treatment which has made his hair softer and very clean
My horse rubs his mane all the time, straight down to the skin. I use MTG, and it is AWESOME. It promotes new hair growth, and I have now discovered that it also repels the gnats. My horse is allergic to the saliva of the gnats and no-see-ums, flying around. So you can look all you want, but you will not see the fleas or gnats anywhere on your horse. Since I have started using the MTG, my horse has stopped rubbing, and his mane is growing back!