What it is:A professional eye shadow brush created by makeup artist Laura Mercier.What it does:Laura Mercier All Over Eye Colour Brush is a large flat head brush with a beveled edge to smooth and perfect application of base shades. The large head allows for quick maneuvering and application of Laura Mercier Eye Colours.What else you need to know:The All Over Eye Colour Brush measures 7" and is made of genuine pony hair.