Got it after the review on this site, sooo glad I did, fantabulous coverage (NSA: medium/deep - not so much, a lot lighter than it looks), use a medium size concealer brush, HOWEVER, the color plaettes suck (for lack of a better word ;). I use the darkest shade during the winter and, sadly, have to switch to something else during the summer - yes, tanning is terrible, but I do wear sunscreen faithfully!
I'm still using the same pencil I purchased almost two years ago. I have very thin, sparse eyebrow hairs, yet, I still have about fourth of the pencil left after all this time! I imagine, for those of you with thicker eyebrows, will use even less and so it'll probably last longer. It definitly gives me a "natural" look without the painted on results, major issues since I hardly have any eyebrows to begin with. According to Shu Uemuea, a "unique color pigment releases only when it interacts with the oil in the eyebrow hairs."