I bought one but have not been able to get into the routine of using it.
First obstacle, clean dry face. That means no moisturizer? I can't wait between washing my face and putting something on it. Second obstacle, the lights really bother my eyes and the goggles that came with it are downright painful and leave gouge marks. That seems counterproductive! Insult to injury, the goggles don't help that much. So, after using it, it's hard to see normally for at least 5-10 minutes...everything looks dim and green. Third obstacle, I can't find a place in my day where the first two obstacles would be okay!
If you feel like these would be okay for you, there are some newer versions where the goggles are built in and are softer, and also some newer ones where the mask is shaped, rather than the flexible rubbery kind I have that sits right on your skin. I've considered buying one of those to try again, but haven't yet.
As far as effectiveness, can't judge because I haven't used it! But I use other red light devices with great frequency for things like arthritis, muscle soreness and ortho injuries. I have a foot one I use almost nightly and a flat pad for back pain. My DH uses a knee shaped one and an elbow shaped one. We can both attest that for this kind of use, red light is flat out amazing!!! So I do think that if I could get going on it, the face mask would at least have some effect.