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What is a primary use of salicylic acid in skincare?

  1. Moisturizing dry skin

  2. Treating acne

  3. Whitening skin tone

  4. Reducing hyperpigmentation

The correct answer is: Treating acne

Salicylic acid is primarily used for treating acne due to its ability to penetrate the pores and exfoliate the inside of hair follicles. This exfoliation helps to remove excess oil and dead skin cells, which are common contributors to the formation of acne and clogged pores. Additionally, salicylic acid has anti-inflammatory properties that can reduce the redness and swelling associated with acne breakouts. In contrast, while some other options are important aspects of skincare, they do not align with the primary function of salicylic acid. For instance, the role of moisturizing dry skin is typically associated with hydrating ingredients rather than exfoliating acids. Likewise, skin whitening and the reduction of hyperpigmentation typically involve other agents, such as hydroquinone or vitamin C, rather than salicylic acid, which primarily focuses on treating acne through exfoliation and pore unclogging.