Review on Elmer&#39 Novelty & Gag Toys by Patrick Stephani

These color change adhesives from Elmers are really cool, they have quite a dramatic color change that shows with both sunlight and artificial UV lighting (eg .a flashlight) occurs quickly. . We've tried both the blue-purple and this yellow-red and both are good, but we really like the blue-purple version better, it has nicer colors and seems to have a more intense color shift. This color changes to a deep, almost brownish red, but the original yellow looks a bit dull. If you initiate the color change with a UV flashlight instead of sunlight, the effect seems to last a little longer, especially if you bring the flashlight directly to the slime (may depend on the power of your UV flashlight, our standard for detecting pet stains)