What is the primary reason for using end papers in a perm?

Using end papers in a perm is primarily to contain hair ends during the curling process. End papers help to ensure that the hair is wrapped securely around the perm rod, facilitating an even distribution of the perm solution and guaranteeing that the curls form consistently. This technique minimizes the likelihood of the hair ends flipping out or becoming frayed, which can lead to uneven curls or frizz.

End papers also play a role in protecting the hair's ends from over-processing. By creating a smooth surface for the ends of the hair to lie against the rod, these papers help achieve a more uniform curl and maintain the overall integrity of the hair. This means that the perm results are more polished and aesthetically pleasing.

Other options, while relevant to hair care, do not serve the fundamental purpose of end papers in perming. Frizz reduction, shine addition, and scalp protection are important aspects of hair styling and treatment but do not specifically relate to the functionality of end papers in the perming process.