Which product typically has a lower pH, acid waves or alkaline waves?

Acid waves typically have a lower pH compared to alkaline waves. The pH of a product is significant because it influences how the product interacts with the hair structure during the chemical waving process.

Acid waves are formulated with a pH that generally ranges from about 4.5 to 7.0. This lower pH allows for more controlled and gentle styling processes, as acid waves rely on heat and time to set the curl while maintaining the integrity of the hair.

In contrast, alkaline waves have a higher pH, usually ranging from approximately 8.0 to 9.5. This alkaline nature allows for quicker penetration into the hair's cuticle and a faster curl formation but can sometimes lead to a harsher effect on the hair’s integrity due to the stronger chemical reaction.

Understanding the pH differences is key for professionals when making decisions about which type of waving product to use, depending on the client’s hair type and desired results.