What is the difference between red and infrared light here?

Red light sits in the visible spectrum and acts on the skin surface; near-infrared penetrates deeper into muscle and joint tissue. The mat runs both, so a session covers surface and deeper layers.

Can I use it on my back and shoulders?

Yes. The mat is flexible, so you can lie on it for the back or drape it over the shoulders and legs. Coverage is the main advantage over a handheld wand.

How does it compare with a red light panel?

A panel concentrates higher intensity on one area and needs you to stand in front of it. The mat spreads lower intensity over a larger area and lets you lie down, which suits full-body or back treatment.

Is it a replacement for medical care?

No. It is marketed as non-drug pain relief and recovery support, not a treatment for medical conditions. Talk to a doctor about persistent or serious pain.

Do I need eye protection?

Red and near-infrared light is generally considered safe for the skin, but it is bright. Closing your eyes or wearing the included eye protection during a session is sensible.