I picked this up from Sephora recently and have been wearing it pretty much everyday since. I like it a lot. Do I think there are other alternatives to this? Yes, and there are some that work better, but I'll save that for another post.

Here's what Sephora has to say about this product:

Orgasm Illuminator What it is: A complexion enhancer that makes skin look instantly refreshed, radiant, and glowing. What it does: NARS Orgasm Illuminator lights your skin from within! Deceptively sheer and decidedly luminous, it magically transforms lackluster skin into a remember-me, luscious complexion. Flirt with foundation, go it alone, or go neck-and-neck with your décolleté. The effect is, well, orgasmic.

I totally agree. For me, this does everything it claims to do. I have yet to mix this with foundation, so I don't know if my opinion will differ any, but wearing it alone definitely gives a healthy glow. I would definitely recommend stopping by a NARS counter or Sephora and testing this out. Hand and face swatches:

It really picks up in the sunlight. I let a bit of shade into the swatch to show how it completely disappears. Just don't stand in the shade all day and you'll have that glow you want!

Nothing but the illuminator on my face. My cheek combo is La Femme Russet and NARS Orgam Multiple. This was taken in artificial lighting, with the flash. You get 1.1oz, which is actually quite a bit since a little goes a long way. If you're not sure how much 1.1oz is, check your liquid foundation, most are 1oz.