Lacs are resinlike substances that are used in a variety of applications. They are typically made from a combination of natural and synthetic resins, such as polyurethane, epoxy, and acrylic. These materials are often used to create coatings, adhesives, sealants, and other products. Lacs are known for their durability and resistance to weathering, making them ideal for outdoor use. They are also used in the automotive industry for bodywork and interior trim.