Van Gogh Watercolours are perfect for students and artists of all levels.They feature brilliant, transparent and intense colours with high tinting strength. Most colours are rated with the highest degree of lightfastness +++ (100+ years under museum conditions), with a few colours rated just one step below at ++ (25-100 years under museum conditions). Thanks to their purity and uniform viscosity, these watercolours are easy to work with and easy to mix. Proudly produced with stringent quality control for a consistent experience with every purchase! Practical information: Does not contain any heavy metals. Avoid excessive temperatures for long periods. Short sable brushes are recommended for watercolours, due to their excellent retention capacity and softness. Each tube contains 10 ml.