Review (4/5): Color/ink gets weaker. Good customer service
At first it worked. The lines were visible avd the pen allowed you to have full control if your drawn on brow precision. The 2nd and 3rd time revealed a weaker color. It's as though the ink was fading in the tube. Wint be buying again.
Update: increased star bc the customer service is great. They issued a hassle free refund.