Which of the following ingredients is commonly used in products for oily skin types?

Bentonite clay is a common ingredient found in products designed for oily skin types due to its ability to absorb excess oil and impurities from the skin. It has natural absorbent properties that help to draw out sebum and unclog pores, making it especially beneficial for individuals who struggle with oiliness, breakouts, and acne. Additionally, clay can help to provide a smoother texture to the skin by removing dead skin cells and impurities, leading to a clearer complexion. This makes it a preferred choice for formulating masks, cleansers, and other skincare products catered to oily skin.

Heavy oils, thick creams, and alcohol may not be as effective or suitable for oily skin. Heavy oils can further exacerbate oiliness and contribute to clogged pores, while thick creams may feel too heavy and greasy on the skin. Alcohol, although it can provide an astringent effect, can be overly drying and potentially irritate the skin, leading to a counterproductive response where the skin may produce more oil to compensate for the dryness. Thus, clay stands out as the most effective ingredient for managing oily skin concerns.