The ultimate eyeliner brush, this dual-ended, does-it-all brush from Bobbi Brown includes both of the best-selling liner brushes so it's easy to go from crisp and defined to bold and dramatic. The Ultra Fine Eyeliner Brush was designed to be used with both gel and powder formulas. The slim, tapered head with finely pointed and tightly packed hairs is perfect for creating a flawless, crisp line. Want even more precision? Flip to the Ultra Precise end -- designed for use with any liner formula, this sharply tapered brush, with super-fine, firm bristles keeps your liner on point.