Red Light Logic Guide
Does Red Light Therapy Work Through Clothing?
Why fabric changes light exposure and why device instructions matter.
Fabric sits between the light source and skin, where it can absorb, scatter, or block some light.
Follow the intended setup
Use the placement described for the specific device rather than assuming exposure through clothing is equivalent to direct exposure.
Product research
Considering a wearable for the back?
See our Novaa Back Pad review for verified product details, practical tradeoffs, and the direct merchant link.
Read the Novaa Back Pad Review →