Paint brushes nylon hairs are carefully selected and will spring back perfectly after every brush strokes. They can be easily clean up with soapy warm water and reshaped with your fingers. Pointed-Round Paint Brush, 4 Sets of 10 Pieces Fine Tip Nylon Hair Miniature Paint Brushes for Acrylic Oil Watercolor Gouache, Artist Face Nail Body, Paint by Numbers, Model Craft & Rock Art.