Black lights aren’t really necessary for every day life, unless your a college student and have a felt poster you want to look cool or you’re a detective solving murder mysteries. But they can still be fun.
Now you can turn your phone into a black light using the phone’s flashlight. It just takes a few steps.
You can have a lot of fun with this thing. But I wouldn’t use it in a hotel room. There are just some things you can’t unsee.