Red Seal Cosmetology Practice Exam

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Prepare for the Red Seal Cosmetology Exam. Our quiz features engaging multiple-choice questions and detailed hints to help you master essential concepts for your examination. Gear up for success in your cosmetology career!

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What is the cortex of the hair?

  1. The innermost layer

  2. The outer layer

  3. The middle layer made of a fibrous protein core

  4. A layer made of sebum

The correct answer is: The middle layer made of a fibrous protein core

The cortex of the hair is the middle layer of the hair shaft, made up of a fibrous protein core. This layer provides strength, elasticity, and color to the hair. Option A is incorrect because the innermost layer of hair is the medulla, which is primarily air space. Option B is incorrect because the outer layer of hair is the cuticle, which is flat and thin. Option D is incorrect because sebum is not a layer of the hair, but rather an oily substance produced by the sebaceous glands in the skin to lubricate and protect the hair and skin.

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