Professor Pengelly’s Colour Changing Putty Thermo Reactive Radiant Purple

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 – these putties change… colour.

The Thermo-Reactive Radiant Purple Putty reacts to changes in temperature - as it changes hues right before your eyes. Going from intense purple and bright pink all from a touch, poke or prod. Well, there had to be a reason they’re called ‘hyper-reactive’!

Whichever putty 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.