Double cleansing is a skincare technique that involves washing your face twice using two different types of cleansers. The first step involves using an oil-based cleanser, cleansing balm, or micellar water to remove oil-based residue from the skin, including makeup, sunscreen, and excess sebum. The second step requires using a water-based cleanser to eliminate any leftover residue or water-based impurities from your skin, including dirt and sweat. Double cleansing is a popular skincare routine in Korea and has become a trendy skincare option in the United States. While it is not necessary for everyone, it can be helpful for those who wear makeup, especially waterproof makeup or sunscreen. However, it can be very stripping to the skin, so it may not be suitable for those with rosacea, eczema, or particularly sensitive or dry skin. Most skin types dont need to double cleanse, and washing your face once thoroughly with a gentle cleanser is more than adequate.