I would like to address your concerns:
1. PTL measured their dose at the correct distance that a human face would be from the LED panel. This is the same dose that was utilized in clinical studies.
2. There is no cross contamination of UV rays as the HP facials cannot be activated at the same time as the LED panel.
3. The ETS Rejuvasun bed utilizes 633nm and 830nm LED's in alternating sessions as per the clinical study.