Both technologies use the power of light coverage to stimulate cells, increasing blood flow and scalp circulation while delivering essential nutrients directly to the hair follicles. The wavelengths play an important role in hair growth and the development of strong, healthy hair follicle cells. Although these light therapy technologies are similar, there are notable distinctions.Laser therapy uses a single wavelength to focus a narrow beam of light directly to the scalp, treating a small area. LED light therapy uses one or more wavelengths to treat larger surface areas of the scalp with a broader band of light. This means that LED light therapy has more coverage, activating a higher number of hair follicles per cm² compared to laser hair regrowth treatments.