What should clients be advised to do after receiving a perm?

After receiving a perm, clients should be advised to avoid washing their hair for 48 hours. This recommendation is based on the chemical processes involved in perming, which utilize specific solutions to restructure the hair's protein bonds. Immediately washing the hair could disrupt these newly formed bonds, potentially leading to a loss of the curl or wave formation.

Allowing at least 48 hours before washing ensures that the perm has time to set properly and the hair can retain the intended style. It also gives the scalp and hair follicles time to recover from the chemical treatment. This precaution helps maintain the longevity and quality of the perm, ultimately leading to better results for the client.