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Knowledge hub

Wellness Knowledge Hub

Buying guides, comparisons and setup advice for hyperbaric chambers, red light therapy, cryotherapy, cold plunges and saunas.

Start here: Guides

Our most complete walkthroughs, in plain English.

GuideRed LightRed Light Therapy Buyer's Guide Beds vs. Pads vs. Handhelds Read guide GuideRed LightWhat Is Red Light Therapy? (Photobiomodulation Explained) A plain-English explanation of red light therapy (photobiomodulation): what it is, how ... Read guide

Red Light

7 articlesBrowse all

Merican M6N Whole-Body Red Light Therapy Bed – white bed with the canopy open in a bedroom

Deep Dive

How Often and How Long Should You Use Red Light Therapy?

Follow the manufacturer's timer and frequency. Here are the built-in session lengths of the devices we carry and how to plan co...

Merican M4N Plus Whole-Body Red Light Therapy Bed – white bed with the canopy open and lights on

Comparison

Red Light Therapy vs. Infrared Sauna: They Aren't the Same

How red light therapy devices differ from infrared saunas, and which saunas we carry include red light.

Body Balance System ApolloARC Red & Infrared Light Panel – overhead arm red light panel on a rolling stand

How-To

What Do Irradiance (mW/cm²), Dose and Session Length Mean? How to Read the Specs

How to read red light irradiance and calculate dose, with worked examples from real product specs.

Merican M5N Plus Whole-Body Red Light Therapy Bed – white bed with red light and a green light strip

Comparison

660 nm vs. 850 nm: Red vs. Near-Infrared Light, and What Each Does

Red and near-infrared wavelengths explained, with the wavelengths used by every red light brand we carry.

Merican M4N Plus Whole-Body Red Light Therapy Bed – white bed with the canopy open and lights on

Deep Dive

What Is Red Light Therapy? (Photobiomodulation Explained)

A plain-English explanation of red light therapy (photobiomodulation): what it is, how devices differ and how to start choosing...

Merican M4N Whole-Body Red Light Therapy Bed – white bed with the canopy open and lights on

Deep Dive

Red Light Therapy Safety: Eyes, Skin Type and Who Should Talk to a Doctor First

How to use a red light device safely: eye protection, skin and heat, photosensitivity, implants and who should check with a doc...