Photochromic pigment and powder change colour in the sun and under certain levels of UV exposure. The product turns from an almost colourless powder into vibrant colours if it is exposed to ultraviolet rays. Once the direct UV source is removed from the product, it reverses back to colourless again.
The exclusive flexibility persisted by the photochromic powder makes it suitable to be applied to a variety of materials like glass, paper, wood, ceramics, metals, plastics, board and fabric. A wide range of applications is there for these products which include coatings, plastic injection moulding and printing. As an indicator of temperature, the colour is developed through the irradiation of ink with UV rays. After activation, depending upon the time, the photochromic colours come to a colourless state.
It could be mixed with materials such as glues, paint, varnishes, resins, mediums, gels, liquid plastics/polymers, nail polish and many more. The pigment doesn't mix with water.