These magnificent paints are designed to look and work just like traditional oil paint, but they're a bit special. You can use them without hazardous solvents - they're happy being thinned down and cleaned up with water. They're especially good for artists who share a workspace or don't want solvents in school or at home.
Prussian Blue is a deep blue colour. It was made by German chemist Diesbach around 1704 making it the first synthetic blue pigment. It quickly gained favour as an alternative to genuine Ultramarine.