What can result from excessive processing time during a perm?

Excessive processing time during a perm can indeed lead to an undesired hair texture. When hair is processed for too long, the chemical solutions used in the perm can overly break down the protein structure of the hair. This can result in hair that feels mushy, becomes frizzy, or loses its natural definition, leading to an overall texture that is not what the stylist intended.

Proper processing time is critical to ensure that the hair maintains its integrity while achieving the desired curl pattern. In contrast, if the processing time is ideal, the hair should end up with well-formed, consistent curls. Additionally, the other options do not accurately reflect the consequences of excessive processing time; stronger curls, improved moisture, and increased elasticity are outcomes associated with appropriate processing, not excessive duration.