Invisalign uses a custom-made series of clear aligners created for you and only you. Invisalign clear aligners are made of smooth, comfortable and virtually invisible plastic that you simply wear over your teeth. Wearing the aligners will gradually and gently shift your teeth into place based on the exact movements your dentist or orthodontist plans out for you. The best part about the whole process is that most people won't know even know you're straightening your teeth.