Abstract: The present invention is a substance that allows users to monitor temperature changes and appearance cosmetically on the human body by a change in color of the applied substance. It is intended for direct application to the skin and hair. The range of colors can be adjusted depending on the demand for the specific product or desired effect. The product is meant to be a temporary solution to cosmetically visually show the users temperature or change how the user looks. The cosmetic substance can be applied in many different ways and its unique color changing characteristics can be used on many products.