Abstract: A dressing comb extends longitudinally in a curler tube and has teeth adapted to protrude through a longitudinal slot of the curler tube. Advancing spring means are accommodated in said curler tube and urge said dressing comb to a position in which said teeth protrude from said slot. Said teeth are adapted to be entirely retracted into said curler tube against the force of said advancing spring means. A clamping comb is provided, which extends longitudinally in said curler tube and parallel to said dressing comb and has teeth adapted to protrude through said slot and is urged by said advancing spring means to a position in which the teeth of said clamping comb are adapted to be entirely retracted into said curler tube against the force of said advancing spring means.