INCI: Polyoxymethylene Melamine, Cholesterol, Yellow # 5
Turns yellow when exposed to strong light.
FOR INDUSTRIAL USE ONLY NOT APPROVED FOR COSMETICS
Thermochromatic powders use liquid crystals or leuco dye technology. After absorbing a certain amount of light or heat, the crystallic or molecular structure of the pigment reversibly changes in such a way that it absorbs and emits light at a different wavelength than at lower temperatures.