---
title: "Photobiomodulation — Glossary | School of Dermatology"
url: https://schoolofdermatology.com/glossary/photobiomodulation
description: "Understand photobiomodulation, the science behind LED light therapy, how specific light wavelengths stimulate cellular repair and collagen production in skin."
lang: en
---

Glossary

# Photobiomodulation

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## Definition

Photobiomodulation is the use of specific wavelengths of light — typically red and near-infrared — to stimulate cellular energy production and promote healing, collagen synthesis, and inflammation reduction in skin tissue. It is the scientific mechanism behind LED light therapy devices used in both clinical and at-home settings. The process works by activating cytochrome c oxidase in the mitochondria, increasing ATP production and triggering beneficial cellular signaling cascades that support skin repair and rejuvenation.

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

## Related Terms

LED (Light Emitting Diode): https://schoolofdermatology.com/glossary/led-light-emitting-diode
Red Light Therapy: https://schoolofdermatology.com/glossary/red-light-therapy
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

### How Collagen Loss Actually Works and How to Slow It Down

March 17, 2025
https://schoolofdermatology.com/articles/skin-concerns/how-collagen-loss-works

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