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The ability of the hair to absorb moisture is hair _____.

The hair, skin, nails, and glands are part of the _____ system.

Which of the following is a situation in which a cosmetologist would allow the hair to cool before styling?

Which of the following best describes a procedure a cosmetologist could use to determine how quickly hair will process during chemical servicing?

Which sentence best describes the medulla?

Which layer of the hair shaft provides strength, elasticity, and color?

What are the major chemical elements that make up human hair?

What is the growth phase during which new hair is produced?

If a cosmetologist holds a strand of hair with one hand while sliding the other hand’s thumb and forefinger from the end of the strand to the client’s scalp, what component of the hair is being analyzed?

What is the phase of the hair growth cycle in which the hair can shed?