... stablity 3.Professional; 4.Widely use 5.Great service uv color changing pigment Namephotochromic pigment ModelKW-PP1PackingInner Packing: PE PlasticOuter Packing: ... Plastic barrelColor changing Under Ultraviolet light or sunlight .color change from white color or very light color to RED ,YELLOW,BLUE ,PRUPLE color .Once ... , including fabric, paper, synthetic film, glass, etc. uv color changing pigment