The Capillus Spectrum is an FDA-cleared laser hair therapy cap featuring 312 medical-grade laser diodes and dual-wavelength technology — 650nm red light and 808nm near-infrared light. The two wavelengths work simultaneously: 650nm activates follicle stem cells at the scalp surface while 808nm penetrates to deep scalp tissue for comprehensive follicular stimulation. Treating in just 6 minutes daily, it is Capillus's mid-tier cap designed for hereditary hair loss, active thinning, and post-transplant follicular support. Above the Capillus Pro in the line, it adds the 808nm near-infrared wavelength and increases diode count from 272 to 312. FSA and HSA eligible.