A hair curling iron with retractable brushes having a handle, a generally tubular body secured at its one end to the handle and with a side wall containing a plurality of wall openings, a plurality of bars disposed longitudinally within the body with bristles extending in a generally radially outward direction for reciprocating movement through the wall openings, supports positioned substantially within the body toward each of its distal ends and beyond the bars for longitudinal movement with respect to the body, a plurality of actuator pins fixedly secured to each support and extending longitudinally inward toward the bars at a preselected angle relative to the bars for slidably engaging the bars and moving them in a similar generally radial direction in response to the movement of the supports in a similar longitudinal direction, and a tie rod slidably disposed within the body in longitudinal, coaxial alignment with the body and fixedly secured to the supports for causing their simultaneous longitudinal movement. A plurality of brush guide pins are fixedly secured to the body and extend in a generally radially inward direction for slidably engaging and restraining longitudinal movement of the bars. A manually operable sleeve externally encircles the body and engages one of the supports for moving the supports toward one end of the body for retraction of the bristles through the wall openings, and a spring applies a biasing force on the support directed toward the other end of the body for automatically returning the supports to a position with the bristles extended.
A process for lengthening the hair of persons having short hair and for thickening the hair for those having a relatively snall amount of hair, which process comprises the steps of aligning supplemental hair with the natural hair, adhering the supplemental hair to the natural hair utilizing a colored thermpolastic glue, intertwining the warm adhered natural and supplemental hair together to permit a binding of the supplemental to the natural hair, and then styling the combined hair. A technique for preparing the thermoplastic glue is also disclosed.