I haven't had much luck with using Coconut oil wether it be on horses or myself.
In the winter when it's so cold I can't really wash tails, I use some Cowboy Magic to lightly "wash" his tail and lightly spritz with a leave in conditioning product. The Infusium 23 leave in conditioner from Wal-Mart is about as good and as cheap as I've found. We actually used in it in a show barn I worked at.
I don't recommend products with silicone as it is very drying. (The Cowboy Magic detangler that comes in the small tube, Show Sheen, etc.)
I DON'T LEAD 'EM AND FEED 'EM, I RIDE 'EM AND SLIDE 'EM.
PLAYBOYS OKIE CODY "HOOEY" 10/21/2019