The Winsor & Newton paintbrush with whitened synthetic bristles offers the quality that watercolour artists seek: resistance, elasticity and colour retention. The WInsor & Newton paintbrush with whitened synthetic bristles is also rigid enough for oils and acrylics, while being supple enough for watercolours. Care: Caring for paintbrushes is essential to keeping them in good working condition and to their life span.Watercolours: dip the paintbrush in water and rinse in warm water.Acrylic: clean in soapy water and rinse in warm water.Practical information:Never let dry before cleaning. Using a hydrating paintbrush cleaner after using taltine or soap prevents bristles from drying and keeps the supple shape of the paintbrush.