
Hydrochromic Ink Changes Colour When Exposed to Water
Hydrochromic ink becomes transparent when wet. If you want to hide an image or a certain piece of text or...
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SFXC Hydrochromic Sprayable Ink
from £9.40

Hydrochromic Adhesive Plastic Film Sheet
from £14.20

Student Smart Ink Trial Pack
£17.99

Smart Ink Trial Pack
£24.99 £29.99