---
title: "LED (Light Emitting Diode) | Glossary"
url: https://schoolofdermatology.com/glossary/led-light-emitting-diode
description: "Learn how LED light technology is used in skincare, the different wavelengths and their benefits, and how LED treatments work for various skin concerns."
lang: en
---

Glossary

# LED (Light Emitting Diode)

el-ee-dee

## Definition

In skincare, LED refers to light emitting diode technology used to deliver specific wavelengths of light to the skin. Different wavelengths target different skin concerns — red light for collagen and anti-aging, blue light for acne-causing bacteria, and near-infrared for deep tissue repair and inflammation. LED devices are used in both professional clinical settings and at-home treatments, and the technology has decades of research supporting its efficacy for various skin concerns.

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

## Related Terms

Photobiomodulation: https://schoolofdermatology.com/glossary/photobiomodulation
Red Light Therapy: https://schoolofdermatology.com/glossary/red-light-therapy
Collagen: https://schoolofdermatology.com/glossary/collagen

## 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

### 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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