The Permanent Press cycle on a dryer is a setting that uses medium heat to dry clothes, which is gentler on clothes and reduces the chance of wrinkles forming and setting. Depending on the brand and model, some Permanent Press dryer cycles may include a cool-down period, which helps to gradually transition clothes from a warm temperature to a cool temperature, since clothes that are dried at high temperatures and then folded tend to retain creasing. The Permanent Press cycle is designed to reduce wrinkles in clothing when drying without damaging fabrics that may shrink if exposed to high temperatures. It is best used for colored fabrics, and it is not recommended as a substitute for a delicate wash.