iGrow® Hands-Free Laser Hair Growth System (Newest Model) Treating hair loss has never been easier. iGrow® is one of the most powerful 100% "hands-free" FDA cleared hair growth systems for home use and is intended for both men and women. The iGrow Hair Growth System utilizes a proprietary combination of 51 LED diodes and low level lasers to treat affected areas of the scalp by energizing unhealthy follicle cells and promoting hair growth.