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
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.
Therapeutic window
Light & Technology
The therapeutic window in light therapy refers to the optimal dosage range (wavelength, intensity, and duration) that produces biological benefits without causing harm.
620 nm wavelength
Light & Technology
The 620 nm wavelength refers to a specific wavelength of light linked to DHT inhibition.
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.
