Which type of product is known to tighten skin and reduce the appearance of pores?

The correct choice is astringents, which are designed to tighten the skin and minimize the appearance of pores. These products typically contain ingredients such as alcohol or witch hazel, which have a drying effect that can make the skin feel firmer. By removing excess oil and tightening the skin, astringents can effectively reduce the visibility of enlarged pores, contributing to a smoother and more refined complexion.

Moisturizers, on the other hand, are formulated to hydrate and nourish the skin rather than tighten it. They help to maintain skin's moisture balance but do not typically have a firming effect. Sunscreens protect the skin from UV damage but do not have properties that directly affect pore size or skin tightness. Exfoliators help remove dead skin cells and can improve skin texture, but they do not specifically target pore size or skin tightening like astringents do.