Thermo / Rub & View ink
How the ink works.

The ink goes from black (or your choice of colour) to completely transparent at temperatures 25 degrees Celsius. Higher temperatures are availble on request.
Under the right conditions (high ambient temperature and warm hands), this ideal temperature is easy to reach by giving the object a good rub or by holding it between the thumb and forefinger.

This reveals the hidden message beneath the full colour offset print.

After a certain time, the ink will darken again and the message beneath is once again concealed.

We can provide inks with different levels of temperature sensitivity, but these will need to be specially made.

Colours

Only in black does the ink provide full coverage, but there is a wide range of transparent colours available.