The Bobbi Brown Smokey Eyeliner Brush is expertly designed for smudging and diffusing eyeliner to create the perfect smokey eye. Its rounded brush head and firm bristles seamlessly blend both eyeliner and powder eyeshadow, delivering a sultry, diffused effect. This versatile tool is essential for achieving a soft, smokey look along the upper and lower lash lines and is also ideal for precisely lining the inner corner of the eye. Use it with gel, kohl, or powder formulas to build intensity and master a classic, smudged liner look.