Question 1

What are the two primary layers of the skin, and what is the main function of each?

Accepted Answer

The epidermis is the outermost protective layer that prevents water loss and pathogen entry, while the dermis is the deeper layer containing collagen, elastin, blood vessels, and nerve endings that give skin its strength and sensation.

Question 2

Which layer of the epidermis is responsible for producing new skin cells through mitosis?

Accepted Answer

The stratum germinativum, also called the stratum basale, is the deepest epidermal layer where basal cells undergo mitosis to produce new keratinocytes that migrate upward toward the skin surface.

Question 3

What is the role of melanin in the skin, and where is it produced?

Accepted Answer

Melanin is the pigment that gives skin, hair, and eyes their color and absorbs UV radiation to protect DNA in deeper skin cells from sun damage; it is produced by melanocytes located in the stratum germinativum.

Question 4

How does a client's Fitzpatrick skin type affect the selection of facial treatments and chemical exfoliants?

Accepted Answer

Higher Fitzpatrick types (IV–VI) have more reactive melanocytes and are at greater risk for post-inflammatory hyperpigmentation, so chemical exfoliants must be used at lower concentrations and UV protection is especially critical after treatment.

Question 5

A client states they always burn and never tan when exposed to the sun. Which Fitzpatrick skin type does this describe?

Accepted Answer

This describes Fitzpatrick Type I, which is characteristic of very fair-skinned individuals with little to no melanin protection; these clients have the highest risk of UV-induced burning and sun damage.

Skin Care & Related Services – NIC Cosmetology Exam Flashcards

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