Originally Posted by KaylaMarie96
Then I usually hand graze him for a little while, while I groom him.
That's great for him. Grass has a lot of nutrients in it that hay does not.
When you do find a better grain for him, make sure it's got a little of everything in it. I'm not sure how old he is but find something with lots of vitamins and minerals or you could think about doing something other than grain (ricebran, beet pulp) and work in some supplements.
It's kind of like when our skin is dry, except for horses (and suppose for us too) it's something you need to change internally (like diet for nutrition) rather than externally with a topical. Though that can help too.