Georgia Cosmetologist License Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The ideal pH range for hair care products is between 4.5 and 5.5. This range is particularly beneficial for maintaining the health of the hair and scalp. Hair is made of keratin, which is most stable at this slightly acidic pH level. Products that fall within this range help to preserve the natural state of the hair, minimize frizz, and maintain its moisture balance.

Using products with a pH that is too high or too low can lead to issues such as dryness, brittleness, and can compromise the cuticle layer of the hair. It can also disrupt the scalp's natural barrier, potentially leading to irritation or other scalp conditions. Therefore, selecting hair care products with a pH between 4.5 and 5.5 is crucial for optimal hair health and overall effectiveness.