Face masks can be beneficial for acne-prone skin when they contain ingredients that help control excess oil, reduce inflammation, and purify the pores. Look for masks that contain ingredients like clay, charcoal, or salicylic acid, as these can help absorb excess oil and unclog pores. However, it is important to choose masks formulated specifically for acne-prone skin and ensure that they are used in moderation to avoid drying out the skin.