Washington Barber License Practice Exam

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Prepare for the Washington Barber License Exam with flashcards and multiple-choice questions, including hints and explanations. Boost your confidence for your exam day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

As the cells of the hair shaft mature, they begin to fill up with what?

Water
Melanin
Keratin
Collagen

The correct answer is: Keratin

As the cells of the hair shaft mature, they do not fill up with water (A) because water is not a major component of hair. Melanin (B) plays a role in hair color, but it is not the main substance that fills the hair shaft. Collagen (D) is a protein found in connective tissue and is not a major component of hair. Instead, it is keratin (C) that fills up the cells of the hair shaft, giving hair its strength and structure.