I picked up a sample tube of the primer with a recent Sephora order, and the sample tube allowed me about four or five uses. From the images I’ve seen online, the packaging is similar–just a longer tube for the full-size version. They both have a doe-foot applicator (like the kind you see in lipgloss). It has an incredibly thin, slightly creamy consistency. When applied, it looks white on the applicator, but it is virtually colorless. This colorlessness is actually my only–albeit marginal and nitpicky–complaint.
It’s so colorless, even from the get-go, that it is difficult to determine where you’ve applied the primer. This makes covering the entire lid a little more difficult than when one would use a colored, even subtly so, primer. I’ve noticed that if I’ve missed an area, that area will look duller and flake, since there is no primer there. The problem is just it’s really difficult to tell if you’ve missed an area!
Aside from that, if you’ve covered your entire lid, it works really well. It lives up to all the claims NARS makes about it: lightweight, extends the wear, smooths the surface, and maximizes color. I didn’t experience any budging, smudging, creasing, or migration when I used this as a primer underneath my eyeshadows. It is a clear, matte primer that merely smooths over the lid and acts to hold and bond all the eyeshadow together. Colors definitely didn’t look muted at all, and they held their intensity throughout the day.
NARS Smudgeproof is most comparable to Urban Decay Primer Potion and Too Faced Shadow Insurance. The consistency is very similar–they are all very thin and a little creamy. However, NARS definitely feels more velvety once it dries–which is very quickly. They are all nearly colorless, though NARS is definitely truly colorless–UDPP has a slight nude tone to it and TFSI even less nude. I’ve always found that UDPP seemed to have a slight shimmer to it, and NARS is completely matte (which is a good thing, if you want to keep your matte eyeshadows matte!). Of course, the major difference between the two is the price — UDPP goes for $18 for 0.34 oz. while NARS is $24 for 0.26 oz and TFSI is $17 for 0.35 oz.