Developed with plastic surgeons and dermatologists, their best-selling, award-winning brow pencil now comes in four universal shades to match all hair colors, from the blondest blonde to the darkest brunette! With a unique oval tip that mimics the look of natural brow hair, Brow Power adjusts to your brow color based on pressure and works to completely cover gray for your best looking brows. The budge-proof formula ensures natural-looking brows that last with brow-loving biotin and patented Brow Power™ technology to give you the most beautiful, natural-looking brows, even if you have thin brows, sparse brows, or no brows at all. absolute. while the built-in spooley brush does the work for you.