Esthetician Practice Exam Esthetician Practice Chemistry and Product Ingredients Questions and Answers 3

Question 1

What is the role of an emulsifier in a skincare formulation?

Accepted Answer

To blend oil and water phases into a stable mixture

Answer

Emulsifiers reduce surface tension between oil and water, allowing them to combine into a stable, uniform mixture.

Question 2

Which alpha hydroxy acid is derived from sugar cane and is most commonly used in chemical peels?

Accepted Answer

Glycolic acid

Answer

Glycolic acid, derived from sugar cane, has the smallest molecular size among AHAs, allowing it to penetrate effectively for exfoliation.

Question 3

What is the primary concern with using products that have a very high alkaline pH on the skin?

Accepted Answer

They disrupt the acid mantle and impair the skin barrier

Answer

High alkaline pH products strip the acid mantle, compromising the skin barrier and increasing vulnerability to irritation and infection.

Question 4

Which ingredient is a broad-spectrum preservative commonly used to prevent microbial growth in water-based cosmetics?

Accepted Answer

Phenoxyethanol

Answer

Phenoxyethanol is a widely used broad-spectrum preservative effective against bacteria and some yeasts in cosmetic formulations.

Question 5

What is the mechanism of action of retinoids in anti-aging skincare?

Accepted Answer

They increase cell turnover and stimulate collagen production

Answer

Retinoids bind to retinoic acid receptors in skin cells, accelerating cell turnover and boosting collagen synthesis to reduce signs of aging.

Esthetician Practice Exam Practice Test