I bought this the last time I got my brows done at Benefit and I love it!
My brows are not thin, but they are pale blonde and rather unruly, so what I really need is some color and control. This stuff fills the bill perfectly.
The small tapered spoolie makes it easy to apply and the light/medium shade is a good match for what I want my brows to be. Most lighter shades are way too warm, but this one is more cool toned.
Benefit is hitting it out of the park lately with good basic every day products like this! This item retails for $22 and is available at Benefit counters, Sephora, Macy's, and various places online.