With all the content available online these days, it can be hard to figure out what’s real and what’s hype. While we don’t always have the answers, we have a direct line to people who do — which is why we present to you our series The Internet Made Me Ask, where we have experts break down the truth about some of the buzziest trends (and questions) on our timelines, like whether you need pet laundry detergent to clean your dog’s things..

Red light therapy is having a moment — a pretty long one, too. You’ve probably seen the glowing face masks on your feed, the panels promising faster muscle recovery, and the wands claiming to smooth fine lines and even regrow hair .…