What It Is:A makeup brush with a unique curved shape designed to fit the contours of the face. What It Does:The unique shape fits the contours of the face and is designed to lay the powder down evenly on skin, leaving behind a consistent and uniform veil of luminosity.How To Use It: The Glow Powder Brush is designed to be used with Laura Mercier glow powders including the Translucent Loose Setting Powder - Glow.