What should clients avoid after the installation of their extensions?

Clients should avoid combing wet hair after the installation of their extensions because wet hair is more fragile and prone to breakage. When hair is wet, the cuticle is raised, making it susceptible to damage from pulling or snagging. Combing tangled hair while it is wet can lead to stress on both the natural hair and the extensions, potentially causing them to loosen or become detached. To maintain the integrity of the extensions, it is recommended to wait until the hair is dry before styling or combing.

The other options pertain to different considerations. For instance, wearing hats may create friction against the extensions, but it is not as critical as the risk of damage from wet combing. Using hair products can be necessary for maintaining the extensions, as long as they are appropriate for the type of extensions. Sleeping with the extensions is a concern if not properly managed, but techniques such as braiding or using a silk scarf can effectively reduce damage during sleep.