Red Light Hair Growth Cap | 300 LED Beads 660nm + 850nm Hair Care Therapy Hat | Hair Loss Treatment & Scalp Stimulation DeviceOverview Regrow and revitalize your hair with the Red Light Hair Care Cap ? a clinically inspired hair growth device featuring 300 beams of dual wavelength red light irradiation at 660nm and 850nm, with 10Hz and 40Hz frequency settings and 3 chip LED beads for maximum scalp penetration. Simply wear it like a regular baseball cap and let the red light therapy stimulate hair follicles, reduce hair loss, and promote thicker, healthier hair growth ? hands