New Jersey Cosmetology and Hairstyling Practice Exam

How long should a client wait after getting a perm before washing their hair?

1. 24 hours

2. 48 hours

3. 72 hours

4. 1 week

The correct answer is: 48 hours

After receiving a perm, it is recommended that a client waits 48 hours before washing their hair. This time frame is crucial because it allows the hair to completely set the bonds that were altered during the perming process. During the perm, chemicals are used to break down the natural bonds in the hair, and allowing sufficient time for these new bonds to form ensures the longevity and effectiveness of the perm. Washing the hair too soon can interfere with this setting process, potentially resulting in a less effective perm and causing the curls to fall out sooner than expected. Additionally, the scalp and hair can be sensitive after the application of perming solution, and waiting 48 hours also helps to minimize any irritation or adverse reactions. While other options suggest longer wait times, such as 72 hours or 1 week, they are not necessary and may be overly cautious. A wait of 24 hours is too short, as the hair may not have fully set by then. Thus, waiting the recommended 48 hours strikes a balance between care and practicality.