New Jersey Cosmetology and Hairstyling Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What type of hair is most resistant to chemical processing?

Fine hair

Medium hair

Coarse hair

Coarse hair is the most resistant to chemical processing because of its structural composition and thicker cuticle layer. The larger diameter of coarse hair means that the cuticle scales are more tightly packed and provide greater resistance to penetration by chemical solutions. This thickness aids in protecting the hair from potential damage during chemical treatments such as coloring, perming, or relaxing.

Additionally, the robust nature of coarse hair allows it to withstand harsher chemicals to some extent, making it less likely to become over-processed or damaged during treatments compared to finer hair types. Coarse hair holds up better during processing, which is a crucial factor for cosmetologists to consider when choosing the appropriate products and techniques for their clients.

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Curly hair

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