CANS CANS Skincare & Dermatological Treatments

Question 1

Which skin layer is primarily targeted during a chemical peel to stimulate collagen remodeling?

Accepted Answer

Dermis

Answer

Medium-to-deep chemical peels penetrate to the dermis to stimulate fibroblast activity and new collagen production.

Question 2

A patient presents with Fitzpatrick skin type IV. Which chemical peel agent carries the highest risk of post-inflammatory hyperpigmentation for this patient?

Accepted Answer

Trichloroacetic acid (TCA) 35%

Answer

TCA at higher concentrations poses the greatest risk of post-inflammatory hyperpigmentation in darker skin types (IV–VI).

Question 3

Which ingredient in a topical formulation functions as a tyrosinase inhibitor to treat hyperpigmentation?

Accepted Answer

Hydroquinone

Answer

Hydroquinone directly inhibits tyrosinase, the enzyme responsible for melanin synthesis, making it a first-line depigmenting agent.

Question 4

What is the primary mechanism of action of retinoids in aesthetic skincare?

Accepted Answer

Binding nuclear receptors to regulate gene expression and accelerate cell turnover

Answer

Retinoids bind retinoic acid receptors in the nucleus, regulating genes that control keratinocyte differentiation and increasing collagen synthesis.

Question 5

A patient on isotretinoin requests a medium-depth chemical peel. What is the appropriate action?

Accepted Answer

Delay the peel for at least 6 months after discontinuing isotretinoin

Answer

Isotretinoin impairs wound healing and increases scarring risk; a waiting period of at least 6 months after discontinuation is the standard of care before medium or deep peels.

(CANS) Certified Aesthetic Nurse Specialist Practice Test

(CANS) Certified Aesthetic Nurse Specialist Practice Test

CANS CANS Skincare & Dermatological Treatments