TheMr HobbyAqueous Hobby Color Thinner 110mlfrom the modelling accessories rangeprovides a thinner specifically formulated for the Aqueous Hobby Colour water-based acrylic paints.

This thinner contains alcohol for faster drying, though the Aqueous Hobby Color may be diluted with tap water. It also improve adhesion to the paint surface. And it can be used to wash airbrushes and brushes too.