These are acrylic paint colours from Acrylicos Vallejo They are waterbased paints which are non-toxic and non-flammable and come in a 17ml eyedropper bottle which prevents spills. Model Colour is indicated for all surfaces, and especially formulated to adhere to Plastics and Polyesters. The colours brush on smoothly, and cover large surfaces easily and without showing brushstrokes. Their texture makes them equally perfect for minuscule details of miniature artwork. All the shades dry to a mat and opaque finish except for the metallic and transparent colours.The transparent colours render a brilliant finish, tint the surface but do not hide woodgrains or other characteristics. On models, they are applied directly for headlights and signal lights; diluted with Mat Medium, these colours are ideal for tinting airplane or car windows(smoked glass). The application of a coat of transparent colour over the same mat colour gives an extra brilliant special effect.Model Colour can be diluted with water, and all colours can be mixed with one another. The products does not contain solvents and is not imflamable. Colours do not contain lead pigments, nor ingredients harmful to health. Error can be corrected inmediately with water, or with a small amount of alcohol. Once paint has dried, it is waterproof and permanent.