I got a full sized tube of Shadow Insurance with the Too Faced Enchanted Glamourland palette quite a few years ago now. Until then, I'd always used either MAC Painterly or UD Primer Potion (the original and then I started adding the tinted ones). I was more than happy with the primers I had but since I got this for free, I figured I would give it a try and, in the process, I found yet another excellent eye shadow primer. TFSI spreads beautifully and the tiniest dot is all you need for all day lasting power and it dries and sets quickly so you don't have to wait to apply your eye makeup. There is no tugging or dryness. Every now and then, if I haven't used it for a while, the product does seem to separate but rolling the tube around a bit and sort of "massaging" the product inside seems to take care of that. I would not hesitate to purchase this again.