A new hair-growth-stimulating device has been developed by engineers at the University of Wisconsin-Madison. The prototype is self-powered, generating electricity from everyday body movements, and is unobtrusive enough to hypothetically fit under a baseball cap.
Electrotrichogenesis (ETG) is not a particularly new method to combat baldness. The idea is that mild electrical stimulation can enhance hair growth factors in dermal cells. However, one thing holding this method back from any wide-scale implementation has been the bulky technology and battery capacity restrictions.