Barber State Board Exam Complete Practice Test

Question: 1 / 400

What percentage of the hair's weight is attributed to the cortex?

50%

75%

90%

The correct answer indicates that approximately 90% of the hair's weight is attributed to the cortex. The cortex is the thickest layer of the hair shaft and plays a crucial role in giving hair its strength, moisture, and elasticity. Comprised mainly of long chains of keratin, the cortex is responsible for the bulk of the hair’s structure and contributes significantly to its overall weight.

Understanding the composition of hair is vital for hairstylists, as it helps them choose the appropriate products and techniques for hair care and styling. The cortex also affects how hair reacts to chemical treatments and physical styling processes, making knowledge of its properties essential for professionals in the barbering and cosmetology fields. The other options indicate lesser percentages and do not fully capture the substantial role the cortex plays in contributing to the hair's overall weight.

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