What is the visible light spectrum?
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.
Therapeutic red light used in Photobiomodulation (PBMT) falls within this visible range, specifically around 630–660 nm, where it effectively interacts with biological tissues.
Understanding the visible light spectrum helps optimize device design and treatment protocols in red light therapy for hair regrowth applications.
Related terms
Cold Laser Therapy
Light & Technology
Cold laser therapy, also known as low-level laser therapy (LLLT), is a non-invasive treatment that uses specific wavelengths of light to stimulate hair follicles and improve growth.
Intense Pulsed Light (IPL)
Light & Technology
Intense Pulsed Light (IPL) is a broad-spectrum light therapy that emits multiple wavelengths.
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.
Laser Diode
Light & Technology
A laser diode is a semiconductor device that emits light at a specific wavelength.
