Red light therapy is one thing that biohackers are not completely off base about. I tend to ignore most of the things they say because their thought leaders are huge on peddling snake oil remedies.

Here’s an interesting peer-reviewed review article on the technology: https://academic.oup.com/asj/article/41/6/723/6104785?login=false

Please pay special attention to the later section that explains what it means when a device is FDA-cleared as well as the tables summarizing the actual devices/study designs for published clinical trials.

I did get a red light therapy face mask for Christmas, but I have not seen any major results, although to be fair, I do not have any significant blemishes.