Distributed Power on Nostr: ...

https://scholar.google.com/scholar?q=670nm+health+studies&hl=en&as_sdt=0&as_vis=1&oi=scholart Take a spin and read some of the studies, seems skin and eye benefits in the ~650nm range. You can have warm light 2700K-3000K that is not in the 600-700nm range and does not seem to show benefit