What type of waves are processed without heat and have a pH range of 7.0 to 8.2?

The appropriate choice in this context is acid balanced waves, as they are designed to process without the use of heat and typically have a pH range of 7.0 to 8.2. This pH range indicates that they are relatively neutral to slightly alkaline, making them milder than alkaline waves, which have a higher pH and are more common in heated processes.

Acid balanced waves are formulated to create a more controlled and gentler reaction when compared to alkaline waves, allowing for better hair health and reduced damage. They are ideal for hair types that are more fragile or have been previously chemically treated, as they are less aggressive.

While true acid waves also process at room temperature, they have a lower pH, often below 7.0, which distinguishes them from acid balanced waves. Alkaline waves tend to require heat to activate the perm solution more effectively and have a higher pH, which further reinforces their dominant processing method that usually involves heat. Cold waves, on the other hand, often reference alkaline waves used without heat but are less specific than acid balanced waves, which is why they do not fit the criteria as closely.

Thus, understanding the characteristics of acid balanced waves, including their pH and processing method,