This dual-ended brush is designed to groom and enhance both lashes and eyebrows. The Revlon Lash and Brow Brush typically features a spoolie brush on one end and a brow brush on the other. The spoolie brush is used to comb and separate the lashes, helping to remove any clumps from mascara and achieve a more defined and separated lash look. The brow brush, on the other hand, is used to shape and groom the eyebrows, helping to tame unruly hairs and create a polished appearance.