Utah Esthetics Written State Practice Exam

What is hydroquinone used for in skin care?

1. Moisturizing the skin

2. Topical bleaching agent

3. Exfoliation of dead skin cells

4. Enhancing the natural glow of skin

The correct answer is: Topical bleaching agent

Hydroquinone is primarily used in skin care as a topical bleaching agent. It functions by inhibiting the enzyme tyrosinase, which plays a significant role in the production of melanin—the pigment responsible for skin color. By reducing melanin production, hydroquinone helps to lighten hyperpigmentation, such as dark spots, melasma, and freckles, resulting in a more even skin tone. In contrast, the other options focus on different aspects of skin care. Moisturizing involves hydrating the skin and preventing dryness, which is not a function of hydroquinone. Exfoliation refers to the removal of dead skin cells to promote cell turnover, and while it is beneficial for skin rejuvenation, it does not relate to the bleaching properties of hydroquinone. Lastly, enhancing natural glow typically involves products that promote radiance and skin health, which are outside the scope of hydroquinone’s primary use as a bleaching agent.