Red-light therapy has become an increasingly popular treatment in recent years. callisto - stock.adobe.com Red-light therapy ...

This handy single-button LED pen combines red and blue light to reduce breakouts and prevent new ones from occurring. The FDA-cleared device uses six bulbs for quick, three-minute spot treatments.

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an extremely simple ...