Review (5/5): Frozen = NC10-15
I've gone through a dozen concealers trying to find one that both matched my pale warm olive skin tone and covered my extremely dark circles. This concealer beats out all the rest, even the $60 concealer I tried out of desperation.
I purchased the lightest shade, Frozen, and it matches me extremely well. For reference, I'm about NC10-15. I wear Armani Luminous Silk foundation in shade 3 when I've got a little color or Nars Sheer Glow in Siberia in the winter. This would probably also work well for one shade darker in the Nars Sheer Glow (Gobi I think it's called?).
Frozen is not an olive tone; it's straight-up warm/yellow-based. However, since I use it to cover rosacea and purple/brown under-eye circles, the extra yellow doesn't clash with my complexion.
The texture is a thick cream---thicker than Nars Radiant Creamy Concealer, sort of like Tarte Shape Tape, but not nearly as chalky or quick-drying. It has a very natural luminosity and you have lots of time to work with it before it sets. You can achieve full coverage with just a small amount of product, and it builds well without getting cakey. I live in a swampy climate and it doesn't smudge, crease, or flake all day long.