Oregon Barber Certification Test 2025 – 400 Free Practice Questions to Pass the Exam

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What is the ideal pH range for hair products?

3.5 to 4.5

4.0 to 5.0

4.5 to 5.5

The ideal pH range for hair products is 4.5 to 5.5. This pH range is slightly acidic, which is beneficial for maintaining the natural balance of the scalp and hair. Hair and scalp naturally fall within this range, which helps to keep the cuticle layer of the hair smooth and intact. Using products with a pH that is too alkaline can raise the cuticle, leading to frizz, tangling, and potential damage. Conversely, products that are too acidic may overly tighten the cuticle, making it difficult for moisture to penetrate the hair. Therefore, a balanced pH within the range of 4.5 to 5.5 promotes healthy hair, ensuring it remains manageable, shiny, and strong.

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5.0 to 6.0

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