The 630-650nm light stimulates mitochondria which appears to be the mechanism for reducing inflammation and speeding regeneration, turns out they are more similar to chloroplasts than previously thought. As for the near-IR and people who don't understand "why not just use a heating pad" they clearly haven't used both and felt the difference. Heating pads are far-IR around 3000nM and just heat up the water molecules in your tissues while 810nM IR is in the barely visible range and while you will feel heat it is not as intense as the far-IR and less likely to burn you as well while still stimulating blood flow. Also the far-IR does not penetrate much past the skin while the near-IR can reach down to the bone and even pass through it.
630nm will help heal wounds. I closed a stage 2 pressure ulcer in a about half or slightly more than average with one. https://www.amazon.com/your-orders/pop?orderId=112-5593078-1109863&shipmentId=DkgyzkrqY&lineItemId=kgqgtvhnlqppsny&packageId=1&asin=B01MS66S4J&ref_=ppx_hzsearch_conn_dt_b_pop_38
The 630-650nm light stimulates mitochondria which appears to be the mechanism for reducing inflammation and speeding regeneration, turns out they are more similar to chloroplasts than previously thought. As for the near-IR and people who don't understand "why not just use a heating pad" they clearly haven't used both and felt the difference. Heating pads are far-IR around 3000nM and just heat up the water molecules in your tissues while 810nM IR is in the barely visible range and while you will feel heat it is not as intense as the far-IR and less likely to burn you as well while still stimulating blood flow. Also the far-IR does not penetrate much past the skin while the near-IR can reach down to the bone and even pass through it.