I have been using redlight intermittently mostly face and hands. It is more than a coincidence that i get this itchy rash over face with onset of use. Previously I had attributed to Rapa. Rapa dose and regimen hasn’t changed However, during the off “biophotomodulation” period there is no rash. Has anyone experienced something similar? What’s the possible trigger?
You are not crazy, Nick! I joined a red light facebook group and there are indeed people who don’t tolerate NIR and get a rash. Those people either turn off the NIR and just use red light on their faces, or they are farther away, or shorten the time.
1 Like
Seriously?
Bone is not metal, and red light does penetrate it.
Hi DS,
If you have a look at this reference:
Henderson, T. Frontiers in Neurology 15, 1398894, (2024).
The author describes how they used lamb heads as a model to measure how much IR light reached down 3cm into brain tissue. Even with a 6 watt laser, only 0.01% was detected. With a 10 watt laser, 0.35% was detected.
A bank of 200 x 50 mw LEDs did not register at all.
He doesn’t dispute the beneficial effects of infrared light on brain injuries; but he disputes that it is a direct effect from penetration of the skull.
Yeah, it doesn’t look like there will be any significant penetration through most of the skull. Though the LEDs cited “Extensive prior research has shown that infrared light from a 0.5-watt LED will not penetrate the scalp and skull of a human.” are much weaker, 5 - 10 times than the ones used in quality panels, usually 2.5 - 5 watt LEDS.
The 800 - 900 nm wavelengths easily penetrate the eyeball so perhaps the face masks get a little into the brain. There are also some nasal LEDs" Nasal Red Light Therapy Device – FDA Registered’ that might get a little into the brain.
The inner walls of the orbit (toward the sinuses and nose) are among the thinnest bones in the skull, far thinner than the typical cranial vault bone.
Orbital walls (especially the medial and floor near the sinus):
Often “paper thin” – around 0.2–1 mm in places. These are much thinner than the calvarium (top of skull), often only ~1/5 to 1/10 the thickness of the parietal bone.
We must use methods, such as nasal, etc., where the bone is thin or provides a direct path to the human brain if we want to see any significant results.
I continue to use full-body RLT; if for nothing else, it feels good.
2 Likes
Here ya go!
Spoiler alert, some gets through the scull.
Unfortunately, or fortunately, I will no longer be a good test subject to see if 1060 gives me relief from my concussion… my shipment was delayed and it’s only arriving today… my doc gave me propranolol yesterday and it completely wiped out all my symptoms (POOF!).
4 Likes