LOL! I got some Cowboy Magic, thanks to all of your recommendations. They sure got the Magic part right, because I'd been working on a horrible mat on Luna's right rear leg, I tried No More Tangles and that didn't work. It's been a few days, and I finally found some CM at a tack store today. I just finished brushing her and OMG it was so easy!!!! It took half the time it usually does and I got every single tangle and mat out easily
THANK YOU!

Look how great she looks, so shiny and soft and good smellin' too