Pleasantly surprised by this product -- would never have tried it if it weren't for the reviews here! I've never before tried a drugstore cream-style eyeshadow that didn't crease & smudge instantly.
Tough as Taupe is a fairly deep, cool mushroomy taupe. On my hand, it's possible to blend it lightly enough to be a subtle shade, but I can't achieve that on my eyes (and I've used both fingers and a brush). It applies best with a flat, smooth eyeshadow brush I got from the Body Shop long ago. Otherwise it ends up uneven and too heavy. I like it as a base for a fairly smokey eye, or for a more everyday look, applied all over then a highlight shade all over the lid & inner corners. Because it's almost matte (sort of a satin finish) it's quite flexible day-to-night.
This is no MAC Paint: it thinks about creasing at the end of a long day. But it doesn't cause the dry crepey effect I sometimes get from Paints. It gives powder shadow something to grab onto and the lasting power is excellent for a creamy shadow.
Thinking about picking up some other colours! Assuming the formula stays the same across shades, I think some of the lighter colours could be very useful base/highlighter shades.