Review (5/5): If you want perfect wings, Buy it now! You’ll thank yourself.
Not only the wing is so great and convenient to use, but also the liner itself is the best I've owned. All you do is press the wing stamp (pointing outwards) on the corner of your eye, and done with modest wing. Then you fill in the rest of the line with the felt tip that's on the other side of the pen. Takes seconds, Perfect cat eye is finished. Will recommend to all my friends