It's supposed to be a "buildable" liquid highlighter that is available in seven shades. They have a thin consistency that has a little more slip to it than water (almost an oiliness without being a true oil), which helped it spread more evenly on the skin without lifting base products or sheering out too readily. I had no trouble mixing the formula into liquid foundations, primers, or moisturizers or patting onto bare skin (or made-up skin) as a standalone highlighter. The effect of the highlighter was subtle to moderate, depending on application, amount applied, and whether it was layered. Most shades were buildable from semi-sheer to semi-opaque, though I noticed that they looked lighter and more similar applied than they did in the bottles. (Example: Liquid Lustre Gold appears as a darker copper when swatched but looked like a light pink on my cheeks.)
The average rating based on all reviewed shade(s) in this formula is shown below.