Iowa Cosmetology Practice Exam

Question: 1 / 400

What role does the cortex play in hair?

It determines hair length

It provides strength, color, and texture to the hair

The cortex is the middle layer of the hair shaft and plays a crucial role in determining the overall characteristics of the hair. It is responsible for providing strength, color, and texture. The cortex contains fibrous proteins and is composed of long chains of keratin, which give hair its tensile strength and elasticity. The pigmentation that gives hair its color is also found within the cortex, as melanin is stored here. Additionally, the arrangement and density of the cortical cells contribute to the texture of the hair, whether it is fine, medium, or coarse. This makes the cortex integral to the hair's appearance and structural integrity. Hence, understanding the role of the cortex is vital for hair care and treatment, especially in practices related to coloring and styling.

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It acts as a protective outer layer

It influences the shine of the hair

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