Lots of grooming!! I love what daily rubber currycomb sessions do for Scout's coat! I don't bathe him too often, since the shampoo can strip the natural oils from the hair. I also use a dab of corn oil on his feed, it helps his coat and keeps him "well lubricated" digestively as well. I have used ShowSheen, Vetrolin Shine, LaserSheen, and several other brands of shine/detangler. I don't really have a favorite brand, basically whatever is on sale, ha ha, it all works pretty well. Vetrolin kind of removed stains as well. Just remember, shine in a can can't replace a good, daily grooming. Also, if you have a light colored horse, grey or pale palomino, etc., you may not get the same kind of shine as you would on a black or a chestnut. His coat may be every bit as healthy, it's just not in the color of the hair to look like WD-40.
A stubborn horse walks behind you, an impatient one in front of you, but a noble companion walks beside you ~ Unknown