The basics This lightweight brush offers a "Duo" 2 in 1 application: thin liner look using side profile & tip.  The benefits Bristles: Brown PBT (highest grade of synthetic) Handle: Wooden white handle. We DO NOT use natural animal hair in our brushes. This product is vegan, hypoallergenic, and cruelty-free. The uses Fanned out or full coverage lid look using the front face of brush. The molded long handle offers an easy and comfortable application from every angle with more control and better grip. The bottom line The Flat/Liner Duo brush was carefully designed and tested in our "Glitter Lab" working with many different bristle length, flexibility and shade we finally found the perfect "Duo" to match our Glitter/Metal/Neon applications = glitter perfection every time!