What is low-level laser therapy (LLLT)?
Low-level laser therapy (LLLT) is a treatment that uses low-intensity lasers or LEDs to stimulate cellular activity without heating tissues.
LLLT operates on the principles of Photobiomodulation (PBMT), using red or near-infrared light to promote mitochondrial function, enhance ATP production, and trigger biological repair processes.
For hair growth applications, LLLT devices target the scalp with specific wavelengths like 650 nm to support hair follicle health, stimulate dormant follicles, and extend the anagen phase of the hair growth cycle.
Related terms
Wavelength penetration depth
Light & Technology
Wavelength penetration depth refers to how deeply different light wavelengths can travel into biological tissues.
Nanoparticles
Light & Technology
Nanoparticles are ultra-small particles used to improve delivery of active ingredients.
Melanin
Light & Technology
Melanin is the pigment responsible for hair, skin, and eye color.
Laser Diode
Light & Technology
A laser diode is a semiconductor device that emits light at a specific wavelength.
