Arkansas State Barber Practice Exam

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What is the pH range of hair and skin?

1.0 to 2.0
3.5 to 4.5
4.5 to 5.5
6.5 to 7.5

The correct answer is: 4.5 to 5.5

Hair and skin have a slightly acidic pH range, typically between 4.5 and 5.5. This is important because this pH level helps to protect the skin and hair from harmful bacteria and other irritants. Option A and B have a lower pH range, which would be too acidic for the skin and hair and could cause irritation or damage. Option D has a higher pH range, which would be too alkaline and can lead to dryness and breakage of the hair. Therefore, option C is the correct answer with the appropriate pH range for maintaining healthy hair and skin.