The DeSerres wash brush is made of natural bristles. Its oval shape ensures maximum water and color retention.The DeSerres wash brush is very soft and will leave no marks on the page. It is ideal for creating washes on fairly small surfaces.DeSerres brushes offer excellent value for money.Care instructions:Proper brush care is a key step for their performance and longevity.Watercolor: soak the brush in water and rinse with lukewarm water.Acrylic: clean with soapy water and rinse with lukewarm water.Practical information:Never allow the brush to dry before cleaning.Using a brush conditioner after taltine or soap helps prevent bristle dryness and keeps the brushs shape flexible.