Affera Cosmetics' Mini Kabuki Brush is made with synthetic fibers therefore no animal hair is use. It is important to use Affera Cosmetics' Mini Kabuki Brush when applying our loose mineral foundation in order to have an even complexion. The design of the brushes' fine hairs hold the minerals in order to continually disperse for an even application with less mess. You should wash Affera Cosmetics' Mini Kabuki Brush at least once a month with soap and water. Squeeze off excess water and leave to dry.