Putty is often used in therapy, as a stress ball or a squeeze toy. When you use a fidget (something you play with in your hands), your brain is much more receptive to creative thought. This incredible putty shifts colors right before your eyes. Watch it change from blue to purple, then red. You’ll be hypnotized by this smooth, relaxing putty. It’s cool indoors, but natural sunlight makes these colors explode! This product is made in the USA and each tin contains 1/5 lb of putty.