What is the difference between low level laser therapy and red light therapy?

They are closely related and often overlap, but there are some key differences.

Low Level Laser Therapy (LLLT) uses lasers to deliver light at specific wavelengths. Lasers produce coherent, focused beams of light, which allows for precise targeting.

Red light therapy, particularly in consumer devices, typically uses LEDs instead of lasers. LED light is less focused but can cover larger areas more efficiently.

Functionally, both approaches rely on the same principle—photobiomodulation. They stimulate cellular activity using specific wavelengths of light.

In clinical settings, lasers may be preferred for targeted treatments. In consumer applications, LEDs are more practical, safer, and cost-effective.