Question

If my grandfather glasses fall into blue dye, then how can I help my grandfather...?​

Answer 1

Explanation:

How Do These Color-Changing Frames Work? These frames are coated with a special photochromic dye. Once exposed to sunlight, the photochromic dye reacts to UV rays and thus changes the frame color to a different one. Again, when taken away from Sunlight, the frames revert back to their original base color.