It's a plastic mask with infrared lights, they offer one for acne and one for anti aging. I use the anti aging but find the lights do help with zapping acne as well. Although very bright the lights are not warm, this is a pain-free device. Here I am using mine:
Back in the day I belonged to a fancy tanning salon that had the professional version of this. I felt my skin had that nice dewy look and I had less acne when I had a few sessions a week so I was excited for the home version made by the same company. Plus it has great online reviews. This temporary version is only good for 30 uses. It's recommended for daily use but I use a few times a week, basically whenever I can remember. The mask has eye shields built in and is worn like glasses, which at also built in. It's very lightweight and each session lasts for 15 minutes. Batteries are included, yay.
I had a breakout recently and feel like it did clear faster than usual. I've been getting back into my beauty rituals latley (thank you job) so I really can't endorse any other benefits from the mask alone. There are more expensive but non disposable versions on amazon for $100 to $200. I'm undecided if I'll make that kind if investment but I could see myself buying more temporary ones to wear during breakouts for sure.