Fortunately, a UV lamp helps speed up the dry time while setting your nail polish with a sturdy, long-lasting, glossy finish. It's a large reason gel manicures are one of the most popular nail ...

It’s much more durable than standard air-dry polishes, but it requires UV light to cure. [Becky] bought a lamp to use at home, but it’s very bulky and must be plugged into the wall.

Another is to grow cells in single-use reactors, which is wasteful. Ultraviolet (UV) light is another. Yet until recently, generating enough UV-C light, which is required for decontamination ...