TEMPERATURE ACTIVATED This thermochromic pigment changes at 88F 31 C from colored to transparent colored below the temperature transparent above NONTOXIC This powder is safe for skin contact and uses no harsh chemicals but not intended for consumption Great for making colorchanging slime play dough Sugru Polymorph and nail polish VERSATILE This heatsensitive pigment is perfect for a wide range of arts and crafts and mixes well with most mediums paints and resins Make your own heatsensitive mugs secret messages mood rings nail polish slimegoo or whatever you can imagine HIGH QUALITY This powder is ultra fine with vibrant colors EASY TO USE Simply add pigment to a clear base and mix well Keep in mind that mixing generates heat which may temporarily change the color of the mixture It is recommended to start with a very small amount of pigment and add more until the desired color is achieved A ratio of 1 part pigment to 20 parts base is a good starting point