Esthetician Practice Exam Esthetician Practice Esthetics Chemistry and Ingredients 1

Question 1

Which type of acid is classified as a beta hydroxy acid (BHA) and is oil-soluble, making it effective for penetrating pores?

Accepted Answer

Salicylic acid

Answer

Glycolic acid

Answer

Lactic acid

Answer

Mandelic acid

Question 2

What is the role of a humectant in a skincare product?

Accepted Answer

To attract and bind water molecules to the skin

Answer

To create a barrier that locks moisture into the skin

Answer

To emulsify oil and water into a stable mixture

Answer

To lower the pH of a formulation

Question 3

Which of the following best describes the function of a preservative in a cosmetic formulation?

Accepted Answer

To prevent microbial growth and extend shelf life

Answer

To improve the texture and spreadability of a product

Answer

To enhance the fragrance profile of the product

Answer

To increase the concentration of active ingredients

Question 4

Retinol is a form of which vitamin, commonly used in anti-aging skincare products?

Accepted Answer

Vitamin A

Answer

Vitamin B3

Answer

Vitamin C

Answer

Vitamin E

Question 5

What term describes an ingredient that helps other ingredients penetrate more deeply into the skin?

Accepted Answer

Penetration enhancer

Answer

Occlusive

Answer

Chelating agent

Answer

Surfactant

Question 6

Niacinamide is a form of which B vitamin, known for brightening skin tone and reducing pore appearance?

Accepted Answer

Vitamin B3 (nicotinic acid)

Answer

Vitamin B1 (thiamine)

Answer

Vitamin B5 (panthenol)

Answer

Vitamin B12 (cobalamin)