You can find recommendations about the use of products here.
Always work using clean materials (sponges, brushes, spatulas, water bowls) and change the water regularly.
Grimas Water Make-up (Pure) is an unperfumed, gluten-free water-based make-up, intended for face-painting and body-painting.
Pure means that the product in question does not contain any chemical preservatives (such as parabens) or halogenated organic compounds.
Water Make-up works just like watercolour paint.