These inks are a mixture of high technology and pure fantasy.
They are specially formulated in order to change colour once marked with a special revealer.
We offer Variacolor Fiber Pen Inks in many different colours; each of these inks is suitable for use with all fibre and foamed tips, polyester filters and polypropylene (all climate) or polystyrene (temperate climate) bodies.
Their washability is quite difficult from most of the fabrics.
Due to their specific nature of colour-changing inks, Variacolor are liable of spontaneous colour variations from reference shades, especially as a consequence of sometimes even slight humidity and pH oscillations of the support (paper) or environmental conditions.