Esthetician Practice Esthetics Chemistry and Ingredients 1 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.
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Which type of acid is classified as a beta hydroxy acid (BHA) and is oil-soluble, making it effective for penetrating pores?
Answer: Salicylic acid
Salicylic acid is a beta hydroxy acid (BHA) that is oil-soluble, allowing it to penetrate sebum-filled pores and exfoliate inside the follicle, making it especially effective for acne-prone and oily skin.
What is the role of a humectant in a skincare product?
Answer: To attract and bind water molecules to the skin
Humectants such as hyaluronic acid and glycerin work by attracting water molecules from the environment and the deeper layers of the skin, drawing moisture into the stratum corneum.
Which of the following best describes the function of a preservative in a cosmetic formulation?
Answer: To prevent microbial growth and extend shelf life
Preservatives such as parabens, phenoxyethanol, and benzyl alcohol are added to cosmetic formulations to inhibit the growth of bacteria, mold, and yeast, thereby preventing spoilage and ensuring product safety.
Retinol is a form of which vitamin, commonly used in anti-aging skincare products?
Answer: Vitamin A
Retinol is a derivative of Vitamin A. It works by accelerating cell turnover and stimulating collagen production, which helps reduce the appearance of fine lines, wrinkles, and hyperpigmentation.
What term describes an ingredient that helps other ingredients penetrate more deeply into the skin?
Answer: Penetration enhancer
A penetration enhancer is an ingredient that temporarily alters the skin's barrier to allow active ingredients to pass more deeply into the stratum corneum and beyond, increasing their efficacy.
Niacinamide is a form of which B vitamin, known for brightening skin tone and reducing pore appearance?
Answer: Vitamin B3 (nicotinic acid)
Niacinamide is a water-soluble form of Vitamin B3. It inhibits the transfer of melanosomes to skin cells, helping to reduce hyperpigmentation, minimize pore appearance, and strengthen the skin barrier.