A hair cutter has a base comb with a plurality of base teeth and a supporting comb spaced from said base comb having a plurality of elongated supporting teeth extending to a lesser extent than the base teeth. A cutter blade, which may be adjustable, is secured on the supporting comb side of the base comb in spaced relationship with respect to the base comb with a cutting edge extending in the first direction to a greater extent than the supporting teeth, but to a lesser extent than the base teeth. The hair cutter is structured to have the base teeth and support teeth engaging a portion of the body with progressive movement of the hair cutter serving to effect cutting of the hair to the desired length. The cutter blade may be caused to vibrate by a suitable vibrating motor energized by a battery.