For every game-changing beauty hack that goes viral on TikTok, there's another that makes us wonder if the do it yourself activity has actually gone a bridge as well far. And at-home plasma pen therapies fall squarely in the latter camp.

Even if you're not familiar with the tool itself, if you routinely involve with skincare material on TikTok, it's really possible you've seen the outcomes of one: Plasma pens leave pinhead-size markings on the skin. Those who receive full-face…