This stuff is FANTASTIC. I stumbled across it quite by accident... I was actually picking up some leave-in conditioner for my sister from Naimies and on the way out saw this sitting in the middle of the LORAC display.
One of the sales associates saw me trying to figure out what the heck to do with it, so she came to the rescue. Turns out, you can use just a drop this stuff anywhere (including over your eyeshadow) and it instantly adds a 'wet lustre' look without actually being wet. The formula dries to a shiny finish and DOES NOT MOVE until you take it off with makeup remover. It is SERIOUS. I am totally impressed.
Remember the Laura Mercier Lip Shine (one post ago)? I popped a fraction of a drop in the center of my lips and this happened: