Science & evidence

What Is Red Light Therapy?

A complete guide to how it works, potential benefits, and the practical role it can play in a modern wellness routine.

Quick answer

Red light therapy is a non-invasive wellness treatment that uses specific red and near-infrared wavelengths to support cellular activity. It is commonly used for skin, recovery, circulation, and everyday wellness routines.

Red light
Typically 630–660nm. Visible light often used in skin-focused routines.
Near-infrared light
Typically 810–850nm. Invisible light often used for deeper tissue support.
Common uses

What is red light therapy used for?

Red light therapy has gained attention as a convenient, non-invasive approach for supporting a range of wellness goals. Treatments are generally simple, painless, and fit easily into regular self-care routines.

Skin health

Often incorporated into routines for smoother-looking, healthier-feeling skin.

Muscle recovery

Common among active people as part of a recovery routine alongside rest and hydration.

Body wellness

A comfortable addition to relaxation and everyday movement routines.

The science

How red light therapy works.

Red light therapy works through photobiomodulation. During a session, red and near-infrared wavelengths are absorbed by cells, including mitochondria—the cell's energy-producing structures. This may support natural processes involved in cellular communication, normal tissue function, and recovery activity.

In simple terms
Red light → Cellular absorption → Mitochondrial stimulation → Cellular energy → Natural recovery processes
At-home use

How to use red light therapy at home.

Typical at-home routines involve 10–20 minute sessions, several times per week, with consistent use over multiple weeks. Follow the manufacturer's instructions, maintain the recommended distance, and protect eyes when guidance calls for it.

Follow device-specific instructions
Use a consistent treatment schedule
Maintain the recommended distance
Consult a professional for medical concerns