The food coloring has been linked to thyroid cancer in rats and is already banned in parts of Europe, Asia and certain US ...

but if you're aiming for a bright tone, you'll love the result you get. (Just make sure you don't accidentally buy decorating ...

In the activity below, you can make a colorful art material that looks bright in the light ... Be careful not to add too much if you are using a lid. Add 4-5 drops of food coloring to different areas ...