Which substance is often used in treatments for acne?

Salicylic acid is a well-recognized treatment for acne due to its ability to penetrate the skin and help unclog pores. It is a beta hydroxy acid (BHA) that works by exfoliating the skin, encouraging the shedding of dead skin cells, and preventing the buildup that can lead to acne formation. Salicylic acid also has anti-inflammatory properties, which can help reduce the redness and swelling associated with acne lesions.

Using salicylic acid in acne treatments can help manage both whiteheads and blackheads and is commonly found in over-the-counter products like cleansers, toners, and spot treatments designed specifically for acne-prone skin. Its effectiveness and suitability for various skin types make it a go-to ingredient in dermatological practices and skincare regimens aimed at preventing and treating acne.

In contrast, other substances listed do not serve the same purpose or have the desired effects on acne. For instance, hydrogen peroxide can be drying and irritating to the skin, which may exacerbate acne. Vaseline, primarily a occlusive agent, could clog pores and worsen acne conditions, while olive oil, though moisturizing, does not specifically target the underlying causes of acne and could potentially lead to further breakouts in some individuals with oily skin.