They are certified non-toxic, but it is always advisable to supervise children when they are using inks. They are available in a variety of colors, including Pearlescent shades. They are exceptionally fast drying and washable, which makes them excellent for use by children whether they are stamping on paper or creating temporary tattoos. Because they are fast drying, tattoo inks also work well on hard surface papers such as vellum or glossy stock. Watermark Ink is a unique, colorless ink designed to react with the color of the paper on which you are stamping to subtly change its color, usually making it darker.
Watermark ink is available in pads and in pen form.
It also works exceptionally well for creating a resist effect when used with dye ink on glossy paper, and as a base for coloring your project with craft chalks. They are thick, opaque and relatively slow drying. Pigment inks are sold on foam pads in a wide range of colors. Because of its consistency, pigment ink will not dry on coated paper or vellum unless it is heat set or embossed. Pigment inks are fade resistant and suitable for archival applications.