A non-Ancient Chinese Secret. Instrumented results, not yak yak yak talking heads.   Most  TDP lamps wear out, burn out, or break in weeks or less than 1K hours' runtime.   We bought 5 models to find which one healed like it is suppossed to *and* how to modify it for reluability.  The selection-winning, preferred, TDP lamp's weak points were found and modded.   Most non-tinkerers (or non-biohackers)  would have given up.  We did not give up.   Once we got  our selected  TDP lamp working reliably, it became a small-miracle machine.  Used in Asia, and some Canadians, as an antidote to old-age symptoms.  This is not TCM although some sellers claim it is.  The mfg label says it is infrared.  Its light is invisible.