Abstract: An improved apparatus for isolating sections of hair from hair treatment materials, the apparatus comprising an elongated curling rod on which a hair section is adapted to be wound, a sheet of material impermeable to the hair treatment materials adapted to overlie the hair section of for winding onto the curling rod with the hair section, and, a split sleeve sealing member adapted for fitting onto the curling rod in overlying relation to the wound up hair section and the sheet and operative to press upon and seal the hair section and the sheet from hair treatment materials, the split sleeve sealing member defining a pair of tabs extending radially outward from locations thereon, in spaced-apart arrangement, and adapted for squeezing together with the fingers of one hand to force the split sleeve apart sufficiently to place it over the wound up hair section on the curling rod without disturbing the wound up hair section.