FDA Cleared 272 Laser Diodes. The 272 diode Laser Cap is a hair growth device, scientifically designed to help men and women stop hair loss and regrow hair. The FDA cleared Laser Cap uses 272 laser diodes, each with a 5mW power output, to deliver clinically proven wavelengths of low-level light beams to stimulate hair growth (650nm). This red light hair growth device is also known as Low-level light therapy or LLLT. Regrowth laser is the most recent advancement in hair growth technology! This hands-free laser hair growth system is completely painless and completely safe. The 272 diodes laser hair cap has been cleared by the FDA and is available over-the-counter (OTC), stimulates the scalp, energises tired hair follicles, and prevents hair loss by supporting the growth of thicker, fuller, healthier hair at the cellular level. FDA-Cleared & clinically proven to be safe and effective with NO side effects. Advanced cooling technology to protect lasers. Multi-tasker friendly, hands-free design. Completely painless and actually effective.