A lot of reviews I've read and watched have raved about this product but unfortunately, I have to disagree. It's not my favorite brow product. A little background on my brows: I have sparse, asian brow hairs and oily skin.
This pencil is very long lasting. I wore it to gym a few times and all day at an amusement park, testing it through hours of sweat and heat. My brows stayed in place for the most part as long as I didn't touch it. When I blotted (the skin around my eyebrows get pretty oily), not much of the product came off with the oil.
The shape of the tip is great when you first open a new pencil. However, with continued use, the sharpness of the tip is lost and it starts to become dull, making it difficult to get the precision it once had. It's hard to define your eyebrows or mimic hair strokes with a dull tip, especially since this pencil is much thicker. So with my sparse brows, I always have to draw out a shape then fill them in. I always have a hard time doing so with this pencil.
If you already have good brows on the fuller side, or if your brows are already shaped and you just need to fill in sparse areas, this would be the perfect and quick pencil for you!! However, if you have brows like mine, I would not recommend this product. I would suggest trying out the Precisely My Brow pencil in this line, or the Brow Wiz from Anastasia.