Final answer:
The perm rod should be placed perpendicular to the parting, considering the hair's natural fall and the desired curl pattern. Rod placement should also account for comfort and avoid tension that could break the hair. The size and selection of perm rods are tailored to the individual's hair characteristics for an optimal perm outcome.
Step-by-step explanation:
In the process of perm wrapping, the placement of the perm rod is crucial to achieving the desired result. It is advised that the perm rod should be placed in a position relative to the parting that reflects the hair's natural fall and the type of curl desired. When placing the rod, ensure it is perpendicular to the direction of the parting to create a uniform curl pattern.
The rod should also be positioned at a sufficient distance from the scalp for comfort and to avoid damage to the hair and scalp. The tension applied should be firm yet gentle to prevent hair breakage. For a natural look, it is common practice to alternate the direction of the curls by changing the placement of the rods on various sections of hair.
The professional handling the process must consider the hair length, texture, and the desired style while selecting the size of the perm rods and determining their placement. It is the careful attention to these details that contributes to a successful perm treatment.