If you're losing your hair, you might not be reaching for the comb as often as you used to. It's just possible that could be about to change. Research from scientists in China has revealed a promising new way to fight hair loss, and the comb is the key component. But this isn't any regular comb. The 'Detangle' system, unveiled in a new study in Nature Communications, is a specialized comb-shaped bioelectronic device.