Salicylic acid is a type of beta-hydroxy acid (BHA) that is commonly used in skincare products, particularly those designed for acne-prone and oily skin types. It works by exfoliating the surface of the skin and unclogging pores, which can help to prevent breakouts and reduce the appearance of blemishes. When applied topically, salicylic acid can penetrate the skin and dissolve the "glue" that holds dead skin cells together, allowing them to be easily sloughed off. It also has anti-inflammatory properties that can help to reduce redness and inflammation associated with acne. Salicylic acid is generally well-tolerated by most people, but it can cause dryness, flakiness, and irritation if used too frequently or in high concentrations. It is important to follow the instructions on the product label and start with a low concentration to see how your skin reacts before increasing to a higher strength. Overall, salicylic acid can be a beneficial ingredient in skincare products for those with acne-prone or oily skin, but it is important to use it correctly and in moderation to avoid irritation or other side effects.