Perms typically last six to eight weeks, depending on the type of perm you get and how you care for your hair. Over time, the perm will start to loosen and eventually fall out. The amount of time it takes for the perm to fall out can vary depending on your natural hair texture, the type of perm, and your hair care habits. To help extend the life of your perm, use gentle hair care products, avoid heat styling, and use a weekly deep conditioning treatment. Additionally, try to avoid sleeping on wet hair or using too much product, as this can cause your perm to loosen faster.