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Hate to shave? A Dutch electrical-goods manufacturer is working on a process that uses near-infrared light to cause hair follicles to go dormant for weeks at a time. A device using a halogen lamp emits 15-millisecond pulses of light in the 600- to 950- nanometre wavelengths. By moving the device slowly over the skin, a user can force hair follicles into a "telogen phase," in which they temporarily stop producing hair.