Turn Your Phone Into A Black Light Hack. Its super easy to do!
All it takes is a smartphone with a light, three pieces of small tape and two sharpies. One blue, one purple.
Take the first piece of tape, put it over the camera flash on the back of your phone. Color that tape blue. Repeat this step again. After you've put both layers of tape onto the flash or light of your camera, put the third and final layer on top of that one. This is where you pull out your purple Sharpie and paint that sucker in.
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