It is official: If you have e.l.f.'s matte topcoat, once it gets down to about half, and is all thick and goopy, don't bother with thinner, just throw it out! I used Khloe Had a Little Lam-Lam from NOPI and wanted to create a look that I have yet to do, the matted base color, with a shiny print on top. But oh no, e.l.f. wouldn't stand for that!