Red Seal Cosmetology Practice Exam

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What can damage porous hair?

  1. Sun exposure

  2. Mild shampoo

  3. Highly alkaline permanent waving solution

  4. Frequent trimming

The correct answer is: Highly alkaline permanent waving solution

Porous hair is hair that has a damaged cuticle, which is the outer layer of the hair that protects it from external factors. Highly alkaline permanent waving solution can damage porous hair because it contains chemicals that break down the hair's structure, making it weaker and more prone to breakage. Sun exposure, while it can also damage hair, mainly affects the hair's color and elasticity rather than its porosity. Mild shampoo and frequent trimming do not directly damage porous hair, but they can help improve its overall health. It is important to use hair care products specifically designed for porous hair to avoid further damage.

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