The authors have studied 30 section of head-hair with SEM in different part ofthe scalp,with or without dressing.The meterials were taken from 4 healthy men and 4 healthy women.Surface ultrastructure of the cuticle of the hair shaft are distinctly seen.Thecells of the outermost layer are in an imbricative arrangement.The arrangement ofimbrication may roughly be divieded into 6 types,namely,parallel local cross(intersect) local adhesive,mixed,loose and dense.There is no difference observed among different ages and sexes.