The E10 What you need to know: The E10 is a multi-purpose detail eye brush from our Dimensions Series. Handmade from extra soft, high quality, easy to clean goat hair fibres. What it looks like: This brush is made from high quality fibres, a silver ferrule and black handle. What its for: The E10?s multi-purpose design makes it the perfect tool for detail work to the eyes-use this brush for precise eyeshadow application and for seamless blending. This brush is best used with powder products.