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
620 nm wavelength
Light & Technology
The 620 nm wavelength refers to a specific wavelength of light linked to DHT inhibition.
Intense Pulsed Light (IPL)
Light & Technology
Intense Pulsed Light (IPL) is a broad-spectrum light therapy that emits multiple wavelengths.
LED Therapy
Light & Technology
LED therapy uses light-emitting diodes to deliver low-energy light to the skin or scalp.
Laser Diode
Light & Technology
A laser diode is a semiconductor device that emits light at a specific wavelength.
