Esthetician Practice Esthetics Chemistry and Ingredients Questions and Answers Flashcards
6 cards from real Esthetician Practice Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Esthetician Practice Esthetics Chemistry and Ingredients Questions and Answers flashcards as text
What is the role of a preservative such as phenoxyethanol in cosmetic formulations?
Answer: To prevent microbial growth and contamination
Phenoxyethanol inhibits the growth of bacteria, yeast, and mold, extending the shelf life and safety of cosmetic products.
Which form of retinoid is available over the counter and converts to retinoic acid in the skin?
Answer: Retinol
Retinol is an over-the-counter form of vitamin A that must be converted by skin enzymes into retinoic acid to become active.
Niacinamide is a form of which B vitamin commonly used to improve skin barrier function?
Answer: Vitamin B3
Niacinamide (vitamin B3) strengthens the skin barrier by boosting ceramide production and reducing transepidermal water loss.
Which type of ingredient creates an occlusive barrier on the skin surface to prevent moisture loss?
Answer: Occlusive
Occlusives such as petrolatum and mineral oil form a physical barrier on the skin that prevents transepidermal water loss.
What is the main concern when using products with a very low pH, such as professional chemical peels?
Answer: Chemical burns and skin barrier damage
Very low pH products can cause chemical burns, erythema, and compromise the skin barrier if left on too long or used improperly.
Which ingredient derived from the chamomile plant is known for its anti-inflammatory and soothing properties?
Answer: Bisabolol
Bisabolol is a natural compound from chamomile that calms irritation, reduces redness, and has mild antimicrobial effects.