Electrolysis is permanent—and thus, longest lasting. Laser hair removal lasts up to six months and can be permanent with repeated applications, but works better on some people than others. Plucking hairs individually with tweezers lasts up to eight weeks. Waxing lasts from three to six weeks, and, whether done in the salon or at home is a popular way to keep skin sleek for a fairly long time. Depilatories generally keep hair at bay for a week or so and shaving lasts from a few days to a week.