my mares are outside 24/7 all year round. may be missing some nutrients
i do brush him everyday but his coat is white and he's out in the field all day @rileyv_
We put our horses on ShoGlo
Definitely try show sheen!
Just brush your horse, 30 mins a day is all it takes...
if you don't try curry combing him every day it helps bring those proteins to help make the coat shine to the surface. you could also try spraying showsheen on him( but not in the saddle area)