Schmincke Horadam Watercolour Paint Sets offer a great overview of the range. Expand your collection of watercolours, experiment with new colours, or share a Schmincke set as a gift. In order to achieve the highest standard regarding lightfastness, resolubility and stability, Schmincke use the best raw materials available. There is no compromise in quality - the highest standards of artists' pigments allow the highest level of lightfastness. Schmincke's watercolour binding medium is Kordofan Gum Arabic from the Sahara region. Due to it differing from year to year it is tested and the best of the batch is selected to use with their pigments. They use an optimal amount of oxgall to avoid undesired coloured formations and undissolved pigment, allowing the perfect flow of colour.