A "permanent" is a type of hairstyle that involves chemically altering the structure of hair to create curls or waves. This process typically uses a chemical solution and heat to break down the hair's natural bonds, allowing it to be reshaped. Once the hair is set in the desired curl pattern, a neutralizer is applied to lock in the new shape. Permanents can last for several months, depending on hair type and care. They are popular among individuals looking to add volume or texture to their hair. However, maintaining a permanent often requires special hair care products to keep the curls looking healthy and vibrant.