How does salicylic acid work in treating acne?

Salicylic acid is effective in treating acne primarily due to its ability to exfoliate the skin and reduce inflammation. It is a beta hydroxy acid (BHA) that penetrates the pores, helping to dissolve the debris and dead skin cells that can clog them and contribute to the formation of acne. By enhancing the exfoliation process, salicylic acid helps to prevent the buildup of these clogging materials, thereby reducing the occurrence of pimples and blackheads.

Moreover, salicylic acid possesses anti-inflammatory properties that help to calm the irritation and redness associated with acne lesions. This dual action of exfoliation and inflammation reduction makes it particularly effective in both treating existing acne and preventing new breakouts.

In contrast, options involving increasing oil production or preventing moisture absorption do not align with the mechanism of salicylic acid. Increasing oil production would exacerbate acne conditions, while promoting skin hydration would not address the root causes of acne. These factors highlight the unique role of salicylic acid in acne treatment.