Which statement is true regarding the pH range of neutralizers?

• A. A fixed value of 7.0
• B. 2.5 to 7 (varies by neutralizer type)
• C. 9 to 11
• D. Always acidic

Answer: (B)

The key idea is that neutralizers aren’t all the same in pH. Their job is to stop the chemical processing and rebuild the hair’s bonds, but different neutralizers are formulated with different chemistries. Because of that variety, their pH can vary widely—from fairly acidic up to around neutral—depending on the specific product. In practice, that means neutralizers can lie anywhere roughly from 2.5 up to 7, depending on the neutralizer type. That variability is what makes the statement true.

The other options imply a universal pH for all neutralizers, which isn’t how they’re designed. Some neutralizers aren’t strictly acidic, and some aren’t strictly neutral, so a single fixed value or always alkaline/always acidic description doesn’t fit.