1PCS Glow In The Dark Solar System Planet Moon Earth Picture Round Glass Cabochon 12/16/20/25/30/40MM Diy Jewelry Accessories

how to glow in the dark:the picture inside the product is made of fluorescent material. If you put it directly in the dark, it will not emit light. The correct way to use it is: put it in the dark and illuminate the bracelet with a flashlight or light for 10 seconds, make it absorb the light, then turn off the light, you will find it glows in the dark