What is wavelength penetration depth?
Wavelength penetration depth refers to how deeply different light wavelengths can travel into biological tissues.
In hair restoration therapy, red light at around 650 nm wavelength penetrates the epidermis and dermis layers effectively, reaching hair follicle structures without damaging deeper tissues.
Optimizing wavelength penetration depth ensures that therapeutic light energy reaches the intended targets — the scalp and follicular mitochondria — maximizing red light therapy effectiveness for hair growth stimulation.
Related terms
Nanoparticles
Light & Technology
Nanoparticles are ultra-small particles used to improve delivery of active ingredients.
Laser Diode
Light & Technology
A laser diode is a semiconductor device that emits light at a specific wavelength.
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.
Red Light Therapy
Light & Technology
Red light therapy is a non-invasive treatment that uses red wavelengths to stimulate cellular repair.
