Oklahoma Cosmetology Board Practice Exam

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Ace your Oklahoma Cosmetology Board Exam with comprehensive practice questions covering all topics. Get ahead with multiple-choice quizzes, detailed explanations, and hints for each question.

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Which is not a layer of the hair?

Medulla
Cuticle
Cortex
Epidermis

The correct answer is: Epidermis

The epidermis is not a layer of the hair because it is the outermost layer of the skin, not the hair. The medulla, cuticle, and cortex are all layers of the hair. The medulla is the innermost layer, the cuticle is the outermost layer that protects the hair, and the cortex is the middle layer responsible for the hair's strength and elasticity. Therefore, the epidermis is the only option that is not a layer of the hair.