I'm currently working on developing a product and I want the image that I print onto the fabric to appear when it gets wet but be invisible when it's dry. The effect also needs to be reversible.
I am presuming it is hydrochromic inks that I need.
Can anyone please give me any information on how they work and current applications of the technology or tell me where I can find it and who to get in touch with.
Any help would be very much appreciated!
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