---
title: "Red Light Therapy — Glossary | School of Dermatology"
url: https://schoolofdermatology.com/glossary/red-light-therapy
description: "Learn about red light therapy for skincare, how it stimulates collagen, reduces inflammation, and supports skin repair through specific light wavelengths."
lang: en
---

Glossary

# Red Light Therapy

red lyt THAIR-uh-pee

## Definition

Red light therapy uses wavelengths between 620-700 nanometers to penetrate the skin and stimulate mitochondrial energy production in skin cells. It is widely used for collagen stimulation, fine line reduction, barrier repair, and inflammation reduction. It is one of the most researched non-invasive skincare treatments available, with clinical studies demonstrating benefits for photoaging, wound healing, acne, and overall skin rejuvenation. Red light therapy is available in professional clinical devices and increasingly popular at-home LED masks and panels.

Explore LED Light Therapy Devices → (https://ledmask.schoolofdermatology.com/)

## Related Terms

Photobiomodulation: https://schoolofdermatology.com/glossary/photobiomodulation
LED (Light Emitting Diode): https://schoolofdermatology.com/glossary/led-light-emitting-diode
Collagen: https://schoolofdermatology.com/glossary/collagen
Inflammation: https://schoolofdermatology.com/glossary/inflammation

## Learn More

Skin Concerns

### Red Light Therapy for Anti-Aging: What Dermatologists Actually Think

June 9, 2025
https://schoolofdermatology.com/articles/skin-concerns/red-light-therapy-anti-aging

Skin Concerns

### Why Your Skin Loses Firmness After 30 and What Actually Helps

January 6, 2025
https://schoolofdermatology.com/articles/skin-concerns/why-skin-loses-firmness-after-30

Skin Concerns

### At-Home Collagen Treatments: What the Research Actually Says

May 26, 2025
https://schoolofdermatology.com/articles/skin-concerns/at-home-collagen-treatments

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