Wyoming State Board Cosmetology Practice Exam 2026 – All-in-One Guide to Exam Success and Mastery!

The pH scale used to measure the acidity or alkalinity of hair products is a scale that ranges from 0 to 14. This scale is fundamental in understanding the potential effects of various hair care products on hair and scalp health. A pH level of 7 is considered neutral, while levels below 7 indicate acidity, and levels above 7 indicate alkalinity.

Using this scale helps cosmetologists make informed choices about the products they use, as certain pH levels can affect the hair's structure, cuticle condition, and overall manageability. For example, hair is naturally slightly acidic, with a typical pH around 4.5 to 5.5, and using products that match or complement this range can help maintain the hair's integrity and moisture balance. Thus, the option that correctly represents the scale to measure the pH level of hair products is the one that spans from 0 to 14.