Redseal Hairstyling License Practice Test

True acid waves have a pH between which values?

1. 3.0 and 4.5

2. 4.0 and 6.0

3. 4.5 and 7.0

4. 5.5 and 8.0

The correct answer is: 3.0 and 4.5

True acid waves are specifically formulated to have a lower pH, typically falling within the range of 3.0 to 4.5. This pH level is crucial because it allows for a gentler waving action while still effectively breaking down the disulfide bonds in the hair to create curls. The acidic nature of these waves results in a more stable curl formation with less damage compared to higher pH waving solutions. When using a true acid wave, the lower pH ensures that the hair's cuticle layers are not overly lifted, leading to healthier results and improved moisture retention. The effectiveness of these waves also depends on their ability to be used with the right perm rods and technique, further emphasizing the importance of pH in the formulation. The other choices represent higher pH values, which are not characteristic of true acid waves. Higher pH solutions tend to fall into the categories of alkaline waves, which work differently and are typically harsher on the hair. Understanding the pH levels and their implications helps hairstylists make informed decisions about which perm solutions to use based on the desired outcomes and the specific needs of the client's hair type.