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The portion of a hair that protrudes above the surface of the skin is the

What is synonymous with the cuticle?

The portion of a hair that protrudes above the surface of the skin is the

Thick skin

A subcutaneous injection delivers medication into the

Excessive shedding of this layer of the epidermis of the scalp is responsible for dandruff.

Which of the following hair colors is the result of a decrease in melanin?

Excessive shedding of this layer of the epidermis of the scalp is responsible for dandruff.

As skin cells move toward the surface of the body, they produce a protein that reduces water loss. This process is called

A genetic disease characterized by the inability to produce melanin is