Final answer:
No, the client does not need to wait 48 hours to shampoo after a perm service when Olaplex is used, as it helps protect and repair the hair during the chemical process.
Step-by-step explanation:
The client does not need to wait 48 hours to shampoo after a perm service when Olaplex is used. Olaplex is a bond multiplier, which is included in some perm services to protect the hair during the chemical process. Since Olaplex works by repairing and multiplying the bonds in the hair, it can help to mitigate damage during the perm process. As a result, the traditional waiting period for shampooing, which is meant to allow hair bonds to settle and reform after the chemical strain, might be shortened or not necessary at all. However, it is crucial to follow the specific instructions provided with the Olaplex system used or the recommendations given by the professional stylist who performs the service.