As suggested by the name, water-based defoamers utilize water as the carrier, or continuous phase. They typically contain between 60% to 95% water. Many of them are technically oil-in-water emulsions, and therefore contain some form of fat or oil (e.g., mineral oils, vegetable oils, and natural or synthetic waxes). By using water as the carrier and presenting these active ingredients in an emulsified form, these defoamers can more easily disperse into water and water-based process media, and effectively suppress foam.