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
Low-level laser therapy (LLLT)
Light & Technology
Low-level laser therapy (LLLT) is a treatment that uses low-intensity lasers or LEDs to stimulate cellular activity without heating tissues.
Intense Pulsed Light (IPL)
Light & Technology
Intense Pulsed Light (IPL) is a broad-spectrum light therapy that emits multiple wavelengths.
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.
