The purpose of both red light therapy masks and panels is the same. To increase collagen formation and skin rejuvenation. What separates them is that panels are stronger and require only a few minutes per treatment. While masks are less intense and require longer treatment sessions. Masks are also (obvious) limited to be used on the face. While panels can be used on the face as well as the decolletage, neck, and other body parts. If you're interested in a mask, one of the most popular (and quite pricey) is this one from Dr Dennis Gross. On top of the red light, it has the option to use blue light (to fight acne). But I would advise being careful with the blue light since that is also known to be harmful to the skin if used in excess. Other kinds of red light devices are the hand-held ones or so-called wands. They target a smaller area at a time and are usually cheaper than the panels and masks. But they also require more time commitment. If you think that a handheld device would be a good option for you, Revive light offers this affordable one for 99 dollars.