Proximity to light source dramatically affects light penetration depth and intensity according to power laws—moving from 1 inch away from skin means roughly half the light, 2 inches away means roughly one-tenth the light—so whole-body professional red light therapy beds with adjustable light intensity as distance from body increases are superior to personal portable devices.
factualpending
Speaker
Gary BrealeyEvidence Quote
“proximity to light matters right...let's say you're one inch away from the skin it's half the light if you're 2 inches away from the skin it's like one/ tenth of the light right it's a dramatic drop”
Created: 8/13/2026, 9:54:01 AM
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