What is the pH range of alkaline waves?

The pH range of alkaline waves is between 8.0 to 9.5, which is why this option is correct. Alkaline waves, also known as cold waves, utilize a higher pH level that enables the hair to be reshaped effectively. This elevated pH is essential for breaking down the disulfide bonds in the hair structure, allowing for the formation of curls or waves when the hair is wrapped on perm rods and treated with a chemical solution.

The higher pH also ensures that the waves set more quickly than those treated with lower pH solutions, providing a more efficient process for hairstylists. It's important to note that this pH range is higher than that of acid waves or neutral waves, which typically operate at a lower pH and are better suited for damaged or fragile hair. Understanding these specific pH ranges helps in selecting the right perm solution based on the hair's condition and desired outcome.