Acidifying
Acidifying conditioners have a pH in the range of 3.0 – 4.0, rendering them slightly more acidic than most other conditioners (which are typically formulated to have a pH in the range of 4.0-5.0). These types of conditioners have a few benefits. Acidifying rinses or conditioners lower the pH of hair to or slightly below its isoelectric point (estimated to be at a pH between 3.0-3.7), which is its ideal state. At the isoelectric point the cuticle is tightly sealed, the keratin proteins possess no residual electrostatic charge, and the hair shaft is thought to be harder and in the state most protected from the environment.