They are very secretive about what goes into those paints, they don't list the pigments on the tube, and when asked state it is a 'proprietary formula, develope

They are very secretive about what goes into those paints, they don't list the pigments on the tube, and when asked state it is a 'proprietary formula, developed over several years of extensive R&D'. Not that I don't trust them, or could A/B test them myself. They actually performed an A/B test as part of their marketing sending out 2 tubes to artists labeled... A and B.