Free Esthetician Knowledge Questions and Answers

Question 1

What is the stratum corneum?

Accepted Answer

The outermost layer of the epidermis

Answer

The stratum corneum is the outermost layer of the epidermis, which is the visible surface layer of the skin. It consists of dead, flattened skin cells (corneocytes) that are constantly shed and replaced. This layer acts as the skin's primary protective barrier against environmental aggressors, dehydration, and microbial invasion.

Question 2

What is the function of melanin?

Accepted Answer

To protect skin from UV damage

Answer

Melanin is a pigment produced by melanocytes in the skin, and its primary function is to absorb and scatter harmful ultraviolet (UV) radiation from the sun. By doing so, it protects the underlying skin cells from DNA damage. Increased melanin production leads to tanning, which is the body's natural defense mechanism against sun exposure.

Question 3

What is the purpose of a toner in skincare?

Accepted Answer

To balance skin pH and remove residue

Answer

Toners are designed to be used after cleansing and before serums or moisturizers. Their main purpose is to restore the skin's natural pH balance, which can be disrupted by cleansing, and to remove any lingering traces of cleanser, makeup, or impurities. This prepares the skin to better absorb subsequent skincare products, enhancing their effectiveness.

Question 4

What is a contraindication for facial waxing?

Accepted Answer

Using Retin-A or Accutane

Answer

Using Retin-A (tretinoin) or Accutane (isotretinoin) makes the skin significantly more fragile, thin, and sensitive. Waxing while on these medications can lead to severe skin lifting, tearing, redness, and irritation, as the skin's integrity is compromised. It is a major contraindication for waxing, and clients should discontinue use for a specified period before waxing.

Question 5

Which of the following best defines exfoliation?

Accepted Answer

Removing dead skin cells

Answer

Exfoliation is the process of removing dead skin cells from the outermost layer of the skin, the stratum corneum. This can be achieved physically (e.g., scrubs) or chemically (e.g., AHAs). The purpose of exfoliation is to promote cell turnover, improve skin texture, brighten the complexion, and allow other skincare products to penetrate more effectively.

Esthetician Practice Exam Practice Test

Esthetician Practice Exam Practice Test

Free Esthetician Knowledge Questions and Answers