What is red light therapy?
Red light therapy is a non-invasive treatment that uses visible red wavelengths (typically 620–750nm) to stimulate cellular energy production and enhance tissue repair.
In the context of hair growth, it works by improving circulation, reducing inflammation, and energizing hair follicle cells to extend the growth phase.
Red light therapy is one of the most promising modalities for non-surgical hair restoration and is supported by both clinical studies and anecdotal success stories.
Related terms
Visible light spectrum
Light & Technology
The visible light spectrum is the range of electromagnetic wavelengths that are perceptible to the human eye, typically spanning from about 380 nm to 750 nm.
Melanin
Light & Technology
Melanin is the pigment responsible for hair, skin, and eye color.
660 nm wavelength
Light & Technology
The 660 nm wavelength refers to a specific red light frequency commonly used in therapeutic devices to stimulate biological processes.
Wavelength penetration depth
Light & Technology
Wavelength penetration depth refers to how deeply different light wavelengths can travel into biological tissues.
