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

Stratum corneum

Answer

Hypodermis

Answer

Stratum granulosum

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

Glycolic acid 30%

Answer

Jessner's solution

Answer

Lactic acid 50%

Question 3

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

Accepted Answer

Hydroquinone

Answer

Retinol

Answer

Niacinamide

Answer

Azelaic acid

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

Inhibiting melanin transfer to keratinocytes

Answer

Blocking UV-induced free radical formation

Answer

Increasing skin hydration via aquaporin channels

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

Proceed with the peel at a reduced concentration

Answer

Apply a superficial peel only and monitor closely

Answer

Obtain physician clearance and proceed immediately

Question 6

Which topical ingredient is classified as a broad-spectrum antioxidant that also inhibits tyrosinase and strengthens the skin barrier?

Accepted Answer

Niacinamide

Answer

Kojic acid

Answer

Vitamin C (L-ascorbic acid)

Answer

Alpha-arbutin