It is a versatile brush that helps create a smooth and well-blended eyeshadow application. The brush typically features soft and densely packed bristles that are designed to pick up and distribute eyeshadow evenly onto the eyelids. The shape of the brush is often flat and slightly rounded, allowing for precise and controlled application of eyeshadow. To use the Revlon All Over Shadow Brush, you would typically dip the brush into your desired eyeshadow shade and tap off any excess. Then, starting from the inner corner of the eye, you would gently sweep or pat the brush across the eyelid, blending the color outward. The brush can be used to apply a single shade all over the lid or to blend multiple shades together for a more intricate eye look.