I've tried a ton of eye shadow pimers. This, by far, is the best one. A little dot of this will cover your entire eye lid. It's light weight, non-greasy, and it works with all types of eye shadow (cream, powder, etc.). Your eye shadow will not crease or run. I wear a ton of eye shadow (like, drag queen amounts...lol) and with this product, it stays put. My eye shadow looks perfect in a snow storm or after a great workout. You can get Shadow Insurance at Sephora, Ulta, or right from the Too Faced website. It's reasonable priced at $18, and since a little goes a long way, it will last quite a while. I give this product an A+!!