Utah Master Esthetician Practice Exam

What is hydroquinone primarily used for?

1. Promoting collagen production

2. Reducing inflammation

3. Topical bleaching agent that inhibits the production of tyrosine

4. Exfoliating dead skin cells

The correct answer is: Topical bleaching agent that inhibits the production of tyrosine

Hydroquinone is primarily known for its use as a topical bleaching agent that works by inhibiting the enzyme tyrosinase, which is crucial in the production of melanin in the skin. By blocking this enzyme, hydroquinone effectively reduces hyperpigmentation, leading to a lightening of dark spots, melasma, and sun damage. The action of hydroquinone is specific; it targets the melanin production pathway, making it particularly effective for treating skin discoloration issues. This specific mode of action distinguishes it from other treatments that may promote collagen production, reduce inflammation, or exfoliate the skin. While those treatments serve their purposes, they do not address pigmentation in the same way that hydroquinone does. Therefore, understanding hydroquinone's role in dermatology helps patients seeking to manage skin tone irregularities.