Plucking hairs in a precise pattern can make even more pop up in their place, a US study suggests.2. Playing with the density of hair removed altered how serious an injury the body recognised and in turn how much hair regrow.3. The team managed to regenerate 1,300 hairs by plucking 200, in the study using mice reported in Cell journal.4. Experts said it was "really nice science" but were uncertain if it could lead to a cure for human baldness.5. Half of men have male-pattern baldness by the age of 50.6. The team at the University of Southern California were investigating how hair follicles communicate with each other to decide on the scale of repair job needed.
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