Im also interested in red light therapy
I use an AA light with a red LED swap, on my eyes, pimples, and bruises…
Have not tried the larger coverage panels, like the one you linked (thanks for that, always appreciate a post with links). I would buy the mixed LED option, because Ive seen a lot of red light studies that use far red (730, 850, 900nm), not just visible red (660nm).
My understanding is red light is not harmful to tissue… eye protection that applies to UV light, does not apply to red spectrum.
the thread that got me interested in red light is this one:
here is another red light thread: