The other day I was searching for “glow in the dark candy” (why? What do you do in your free time?), and was pleasantly surprised to see that it existed. This Instructables by BrittLiv will have you making yummy and toxic-looking candy in no time. The glowing effect comes from vitamin B2 (Riboflavin) , which means you could potentially say this candy is actually good for you! BrittLiv adds mint oil to hers, but says you can add any flavor you like to the candy–I’d recommend lime.