Highly precise and multi-functional, Tweezerman's Brow & Lash Brush is densely packed to comb through brows and lashes for enhanced definition, with or without cosmetics. To use for brows: Hold brush at angle and brush through brows to set brow hairs into place. May be used with or without brow gel or serums. To use for lashes: Hold brush parallel to lash line and brush upward and outward to define lashes.