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

To preserve the product from microbial growth

Answer

To add fragrance to the product

Answer

To increase the SPF of sunscreen

Question 2

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

Accepted Answer

Glycolic acid

Answer

Lactic acid

Answer

Citric acid

Answer

Malic acid

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

They cause excessive oiliness

Answer

They increase melanin production

Answer

They clog pores and cause comedones

Question 4

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

Accepted Answer

Phenoxyethanol

Answer

Jojoba oil

Answer

Zinc oxide

Answer

Squalane

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

They form a physical barrier on the skin surface

Answer

They neutralize free radicals exclusively

Answer

They reduce sebum production only

Question 6

Which of the following is classified as an occlusive moisturizing ingredient?

Accepted Answer

Petrolatum

Answer

Glycerin

Answer

Hyaluronic acid

Answer

Aloe vera