A hair cutting device adapted for cutting one's own hair comprises a comb piece having teeth with smooth comb edges near open ends and sharp cutting edges near closed ends, a moving cutting arm with sharp cutting teeth in contact and rough alignment with the sharp cutting edges of the comb piece, capable of reciprocating sideways back and forth and cutting hair in conjunction with the sharp cutting edges of the comb piece, and a hair guard in close proximity along their lengths. The hair guard can be lowered to expose the sharp cutting edges of the comb piece and moving cutting arm to cut hair or raised above the sharp cutting edges to work as a comb.

A hair cutting device adapted for cutting one's own hair comprises a comb piece having teeth with smooth comb edges near open ends and sharp cutting edges near closed ends, a moving cutting arm with sharp cutting teeth in contact and rough alignment with the sharp cutting edges of the comb piece, capable of reciprocating sideways back and forth and cutting hair in conjunction with the sharp cutting edges of the comb piece, and a hair guard in close proximity along their lengths. The hair guard can be lowered to expose the sharp cutting edges of the comb piece and moving cutting arm to cut hair or raised above the sharp cutting edges to work as a comb.