Which of the following is commonly used to treat acne?

Salicylic acid is a well-known treatment for acne due to its effectiveness in exfoliating the skin and unclogging pores. As a beta hydroxy acid (BHA), it penetrates the oil glands, which allows it to address the root causes of acne, such as excess sebum production and the presence of bacteria. By helping to shed dead skin cells and lessen inflammation, salicylic acid promotes clearer skin and reduces the frequency of breakouts. Its oil-soluble nature makes it particularly effective for oily and acne-prone skin types, which is why it is commonly recommended in both over-the-counter products and professional skin treatments aimed at managing acne.

The other treatments listed, while beneficial for various skin concerns, do not specifically target acne in the same effective manner. Glycolic acid, for instance, is an alpha hydroxy acid (AHA) primarily used for its exfoliating properties but tends to be more suitable for dry or sun-damaged skin. Vitamin C is celebrated for its antioxidant properties and its role in brightening and improving skin tone but does not directly address the mechanisms related to acne. Hyaluronic acid is a powerful humectant ideal for hydration and maintaining skin moisture, but it does not have the exfoliating properties necessary