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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](/glossary/photobiomodulation)[LED (Light Emitting Diode)](/glossary/led-light-emitting-diode)[Collagen](/glossary/collagen)[Inflammation](/glossary/inflammation)

## Learn More

[![Red Light Therapy for Anti-Aging: What Dermatologists Actually Think](https://images.unsplash.com/photo-1579684385127-1ef15d508118?w=800&h=400&fit=crop&q=80&fm=webp)

Skin Concerns 

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

June 9, 2025



](/articles/skin-concerns/red-light-therapy-anti-aging)[![Why Your Skin Loses Firmness After 30 and What Actually Helps](https://images.unsplash.com/photo-1509967419530-da38b4704bc6?w=800&h=400&fit=crop&q=80&fm=webp)

Skin Concerns 

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

January 6, 2025



](/articles/skin-concerns/why-skin-loses-firmness-after-30)[![At-Home Collagen Treatments: What the Research Actually Says](/assets/collagen-treatments-hero-QXeQISaR.webp)

Skin Concerns 

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

May 26, 2025



](/articles/skin-concerns/at-home-collagen-treatments)

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