I feel like these suckers are the most underrated products ever! First of all, the colors and vibrancy are amazing. Secondly, the glitter is very finely milled and quite reflective, which I personally adore; and thirdly they last long when used with a sticky base. I have hacked the system and found out that using a thin knife, I can pop the roller tops off and reveal just pure pigment. That is what I find I prefer to do, since the ball isn't as accurate if you want to put the shadow in just a small area. So I just apply Nyx glitter glue as a base and then pat on the pigment with a flat brush! I think these are just as good as the Mac pigments, makeup geek sparklers, and other loose pigments on the market. So worth picking up. By the way, "nude diaphane" is the better looking sister to macs "tan" pigment!