For oily skin, it's important to look for ingredients that help control excess sebum production, reduce clogged pores, and reduce inflammation without stripping the skin of its natural moisture," she says. "Double cleansing refers to a two-step face cleansing technique, which involves using an oil-based cleanser and a water-based cleanser to thoroughly remove makeup, sunscreen, and other impurities from the skin." For our list of the best Korean cleansers, we considered each product's performance across five primary categories: product ingredients and efficacy, packaging, fragrance, texture, and product wear.