Final answer:
Conditioners with an acidic pH that are used before shampooing to condition and normalize hair are known as Neutralizing conditioners. They help restore the hair's natural pH balance after chemical treatments.
Step-by-step explanation:
Conditioners with an acidic pH that condition and normalize hair prior to shampooing are known as Neutralizing conditioners. The purpose of these conditioners can be related to other pH-related substances, for example:
- Human blood, with a pH of 7.4, is slightly basic.
- Household ammonia, with a pH of 11.0, is basic.
- Cherries, with a pH of 3.6, are acidic.
Neutralizing conditioners work to restore the natural pH of hair after chemical treatments like relaxing or coloring, which often involve high pH levels that open the hair's cuticle. The application of an acidic conditioner helps to close the cuticle and bring the hair back to its normal pH, thus making hair manage for shampooing and styling.