Abstract: A variety of longitudinally adjustable permanent wave rods are disclosed. Each permanent wave rod has an outer rod into which an inner rod fits. In one embodiment, an adjustable permanent wave rod has a number of sockets into which retainers fit. Alternatively, clips may be used to firmly hold hair between the clips and the inner and outer rods of the permanent wave rods. Preferably, the wave rods contain a distribution mechanism that distributes permanent solution towards the inside surface of the wave rods and also slows the solution down. Most preferably, the inner rod has a tapered surface along a substantial portion of its length and the outer rod has a tapered surface near the inner rod. Additionally, when the inner rod is tapered, a retractable ring is used that has extension couplings on it.