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What is the common effect of using salicylic acid on the skin?

  1. Increased vitamin D absorption

  2. Exfoliation and unclogging pores

  3. Hydration of dry skin

  4. Smoothing fine lines

The correct answer is: Exfoliation and unclogging pores

The common effect of using salicylic acid on the skin is exfoliation and unclogging pores. Salicylic acid is a beta hydroxy acid (BHA) that penetrates deeply into the pores, helping to dissolve excess oil and dead skin cells. This action reduces the formation of clogged pores, which can lead to acne and other skin issues. Salicylic acid also has anti-inflammatory properties that can help soothe the skin and lessen redness associated with breakouts. While exfoliation improves overall skin texture, it is particularly beneficial for those with oily or acne-prone skin. The ability to reduce keratinization, or the buildup of dead skin cells, makes it effective for preventing future breakouts and maintaining clearer skin. On the other hand, options such as increasing vitamin D absorption, hydrating dry skin, and smoothing fine lines pertain to different mechanisms and ingredients that do not align with the primary benefits of salicylic acid, highlighting its focused role in reducing oiliness and promoting clearer skin through exfoliation.