Dryer sheets are thin fabric sheets coated with a mixture of softening agents and fragrances. They are added to the dryer during the laundry cycle to reduce static cling, soften clothes, and impart a pleasant scent. The sheets work by transferring these agents onto the fabric as they tumble in the heat of the dryer. In addition to their primary functions, dryer sheets can also help reduce wrinkles and make ironing easier. Some people use them for other purposes, such as freshening up drawers or repelling insects, due to their scent and chemical properties.