California Barber Written ExamSkin Care ServicesHard
A client has extremely dry and flaky skin with a compromised barrier function. The barber needs to select a product that will not only hydrate but also help to prevent further moisture loss by forming a protective layer on the skin's surface. Which type of ingredient would be most effective for this purpose?
- AAstringent
- BOcclusive
- CAHA (Alpha Hydroxy Acid)
- DHumectant
Show answer & explanationAnswer & explanation
Correct answer: B. Occlusive
Occlusive ingredients create a physical barrier on the skin's surface, preventing transepidermal water loss (TEWL) and protecting a compromised skin barrier, which is crucial for extremely dry and flaky skin.
Why the other options are wrong
- A. Astringents tighten skin and can be drying, which would exacerbate dry and flaky skin with a compromised barrier.
- C. AHAs are exfoliants that can be too harsh for a compromised barrier and can increase moisture loss if not followed by proper hydration.
- D. Humectants attract water but do not prevent water loss as effectively as occlusives, which are needed for a compromised barrier.
Occlusive Ingredients
Skincare ingredients that form a protective, hydrophobic layer on the skin's surface, preventing transepidermal water loss (TEWL).
- Examples include petrolatum, mineral oil, lanolin, silicones, and waxes.
- Essential for very dry skin and conditions where the skin barrier is damaged.
- Work by physically blocking water evaporation from the skin.
Memory trick: Occlusives seal the skin's gate, moisture loss they abate.