The acrylic paint is water-soluble, which avoids the use of irritating and aggressive solvents. It is non-toxic.
Those paints are dedicated to applying with a brush and airbrush. If it is necessary, it can be easily diluted with a dedicated thinner for acrylic paints or water. If you decide to work with an airbrush, there is no need to thin the paints. It dries completely within 24 hours.