The quickness, relative effortlessness, and convenience associate with the an improved attachment for a hair styling iron or an improved hair styling iron, either one featuring interchangeable comb bristles assemblies located adjacent to and extended outwardly and perpendicular to a hair styling iron heating element for the purpose of contacting and positioning the hair strands in parallel arrangement before, during, and/or after application of heat from a hair styling iron heating element.The interchangeable comb bristle arrangements may be composed of different bristle densities, thicknesses, and/or material to accommodate different types and thicknesses of hair. The improved attachment may be slid over a hair styling iron arm element and be secured to the hair styling iron using a retaining lip which hooks to engage an inner surface of the heating element arm and a security clip that attaches onto one end of the interchangeable comb bristle assembly.