Professor Pengelly’s Colour Changing Putty UV Hyper Reactive Green

These putties are not your average moulding material. Oh, sure, they sculpt and stick and squish and mould and mush with the best of ‘em, but these fellas hold a secret. Under the right circumstances – circumstances involving exposure to UV light – these putties change… colour.

The UV ‘Hyper-Reactive’ putties come in either a sickly green or a gooey white, and each tin comes with a small UV light. When you shine this UV light on the UV-reactive putties… well, there’s a reason they’re called ‘hyper-reactive’.

Whichever of these putties you choose, they all make for amazing gooey sculpting materials, letting you mould, make and mush whatever you want with them. Don’t miss out!

Peace of mind: All our putties and slime products have been tested to the highest safety standards and are fully compliant with EU Toy safety levels.