What type of curl does a perm create?

A perm, short for permanent wave, is a chemical treatment that alters the structure of the hair to create long-lasting curls or waves. The process involves using chemicals to break the disulfide bonds in the hair and reshape it around rods or curlers. Once the desired curliness is achieved, another chemical is applied to set the new shape, leading to curls or waves that can last for weeks or even months, depending on the hair type and care taken after the perm.

This makes long-lasting curls or waves the correct answer, as it accurately reflects the primary purpose and effect of a perm treatment. Temporary loose curls, straight hair, and wavy tresses that revert do not encapsulate the intended outcome of a perm, which is designed to create enduring curl patterns.