I swear by flax seed. We do a 1/2 cup per day and wow... Its cheap, it's easy, and it has a great shelf life. Not to mention the colic protection and hoof benefits. The omega 3 simulates the omega 3 horses would normally get from fresh green grass.
The only downside is they may not like to eat it! If that's the case "omega horseshine" supplement is nearly 100% pelletized flax, but its more expensive.
If you insist on just topical shine, forget the products until show day. Get a nice gentle curry brush and curry every day!
A previous poster is right too! Its winter and they're all furry! Its warmer where I am so my guys still shiny (avatars from Christmas) but you may have to wait til it warms up to get an intense shine! Posted via Mobile Device
My BO taught me a really interesting old school trick that doesn't use any products. You take the palm of your hand and press firmly and stroke in the direction of the coat (kinda like a brush). This supposedly draws the natural oils (and oils from your hand) to the surface and brings out a natural sheen. I tried it on Lilly and it actually really worked!
Sarge generally always has a super shiny coat. His coat was looking a little bedraggled and so was he. I had him tube wormed in January and his sparkle and shine is back. Biscuit's hair was dull when I got him almost 4 months ago. Now his hair is glistening even though his woolies and OMG does he have a heavy coat on his midsection. He is shedding like crazy.
They are fed Safe Choice twice a day with free choice hay and are turned out in a 2 or 3 acre pasture. No supplements - just good nutrition. Loads of grooming. Biscuit is a light palomino and at this moment is pretty darn dirty...can't wait to clean him up and see what he looks like clean!