What is a laser diode?
A laser diode is a semiconductor device that emits light at a specific wavelength, commonly used in low-level laser therapy (LLLT) devices for hair regrowth.
Laser diodes offer precision, durability, and consistent output, making them ideal for wearable or in-office hair restoration tools.
Red light therapy devices equipped with laser diodes typically target the 650–680nm range, stimulating mitochondrial activity and supporting follicle regeneration during the anagen phase.
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.
Red Light Therapy
Light & Technology
Red light therapy is a non-invasive treatment that uses red wavelengths to stimulate cellular repair.
LED Therapy
Light & Technology
LED therapy uses light-emitting diodes to deliver low-energy light to the skin or scalp.
Wavelength penetration depth
Light & Technology
Wavelength penetration depth refers to how deeply different light wavelengths can travel into biological tissues.
