True Earth's products have unique features.
The first feature is that they do not have a "traditional" pigmentation.
All modelling paints have two main components. The dye and the binder. The dye is a particle of pigment, often of organic origin. To be used in paints it is milled, more or less finely, and its appearance reminds a crumb of bread, rough and irregularly shaped.
When we paint, both with brush or airbrush, these shapes roll on each other, and by framing as they can, they fail to settle in a uniform way.
They also tend to clog the airbrush, to stick to the tools, also because the binder that "keeps them together " must be much stronger, to compensate for the empty spaces. Especially airbrush requires specific fluidifying diluents. Based on solvents, smelly and unhealthy if we model at home.
True Earth products such as SDW Shading Colors, Filter & Wash, SDW Rust instead, do not contain pigment.
The coloration is obtained by microscopic spheres of resin dye. To the full advantage of the smoothness both brush and airbrush, with thin paint layers, because the microspheres flow easily on each other and tend naturally to settle in an orderly manner. No brush marks remain, and it is almost impossible to clog the airbrush. In both cases also with a pure paint, without dilution.
Technically they are named "resin in aqueous phase ". In fact there is no water in the products, but they are perfectly dilutable in water only, no specific thinners are needed. They are odorless and we can safely model at home without disturbing ourselves and our family members.
Below : brush painting of a complex camouflage with True Earth's SWD Shading Colors. No brushmarks !