Crazy Aarons Glow in the Dark Amber Thinking Putty is a firm putty with a magical quality. The putty is plain white in daylight and comes alive at dark; with a fantastic hypnotic a colour. Expose the putty to light (the brighter, the better), and it will glow for hours. You can tear, knead, twist, bounce, sculpt and stretch Crazy Aarons Thinking Putty. With so many play options children will be amazed by the brilliant ideas they create with a handful of putty. This tin includes a huge handful (95 ml) of Amber Glow in the Dark Putty. Please note that this product may contain colourants that can stain. Putty may stick to clothing, hair, eyebrows, eyelashes and fabric. Age guide: from 3 years.