Hydrochromic ink(white color to transparent

Hydrochromic ink is a type of ink that changes colour if water has been applied.

It is a special white ink, which changes repeatedly from white to transparent when wetted with water and changes back to the original white when dried, for screen printing onto Paper ,Umbrella cloth,Plastic printing design etc.The vivid color design is concealed with white in dried condition and appears when the ink becomes transparent with water.