UV Reactive Putty
$2.70 inclusive of GST
A bouncy putty that shows its true colour in the sun or under UV light! The putty contains leuco dyes that vividly change colour when exposed to UV.
A fun reversible change that even Einstein could have used to demonstrate his science.
Age: 5 to 12 years
Included: 25g putty of one colour + UV light source in metal tin
No Instruction sheet is included. Please use the Instruction sheet below, if required.