Created for maximum control, the Ultra Precise Eye Liner Brush allows you to create a crisp, fine line with any Bobbi Brown liner. Can also be used for double lining to create density, depth and definition.6.378" L. Imported. A lightweight wooden handle, sharply-tapered, narrow head and super-fine, firm bristles let you apply the perfect amount of liner. Can also be used with Eye Shadow for a more diffuse look. When applying a gel liner, dip point of brush in jar and apply in short, even strokes along lash line. When applying a powder shadow, wet brush and make an "x" in the eye shadow to pick up colour. Use smooth strokes to line lids close to base of lashes.