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In short, yes, it does. Research suggests “it can help increase hair count, thickness, and density,” says board-certified, fellowship-trained dermatologist Lauren Moy, MD, especially for androgenetic alopecia (male/female pattern hair loss). “However, it also depends on how severe the hair loss is,” she notes. “If it is very severe or scarring, it may not be as effective.” Dr. Castilla adds that there is less evidence for its benefits in other types of hair loss, like alopecia areata or scarring alopecias. Plus, efficacy really depends on the device and how consistently it is used. (责任编辑：) |