The formula is supposed to be a "customizable complexion booster" that can be used as a primer, highlighter, or mixed with base products. The line includes seven shades, like a more typical foundation or concealer range, but they have sheerer coverage and fine pearl, so there is some flexibility, though for added luminosity (but not altering color) all-over, one would want to choose a shade closer to their actual skin tone.
It has a jumbo-sized, doe-foot applicator, which I preferred for spot highlighting and priming but isn't as functional for mixing in with base products (compared to a pump). I find that the lighter shades look very similar when mixed with foundation or layered under it (I'm wearing Fair mixed with my foundation here).
The average rating based on all reviewed shade(s) in this formula is shown below.