FREE Esthetician Practice Cosmetic 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 FREE Esthetician Practice Cosmetic Chemistry and Ingredients Questions and Answers flashcards as text
Which cosmetic ingredient is derived from vitamin A and is widely used for its anti-aging and cell turnover properties?
Answer: Retinol
Retinol is a derivative of vitamin A that accelerates cell turnover and stimulates collagen production to reduce fine lines and wrinkles.
What is the pH range generally considered ideal for maintaining the skin's acid mantle?
Answer: 4.5 to 5.5
The skin's acid mantle functions optimally at a slightly acidic pH of 4.5 to 5.5, which helps protect against harmful bacteria and environmental damage.
Which type of surfactant is most commonly used in gentle, sulfate-free cleansers?
Answer: Amphoteric surfactants
Amphoteric surfactants like cocamidopropyl betaine are mild and commonly used in sulfate-free formulations because they cleanse without stripping the skin.
What is the function of dimethicone in skincare and cosmetic products?
Answer: It serves as a silicone-based emollient that smooths and protects skin
Dimethicone is a silicone polymer that forms a breathable barrier on the skin, providing a smooth feel and protecting against moisture loss.
Which preservative system was widely used in cosmetics but has faced scrutiny over potential endocrine-disrupting effects?
Answer: Parabens
Parabens such as methylparaben and propylparaben have been scrutinized due to studies suggesting they may mimic estrogen in the body.
Which ingredient category includes ceramides and fatty acids that help restore the skin's natural lipid barrier?
Answer: Barrier repair lipids
Barrier repair lipids like ceramides, cholesterol, and fatty acids mimic the skin's natural intercellular matrix to restore and strengthen the moisture barrier.