If you’ve been dreaming of smooth, frizz-free, and easy-to-manage hair, you’ve probably considered hair smoothening. Whether you have wavy, curly, or unruly hair, this popular salon treatment promises a sleek, shiny transformation. But if it’s your first time, you might be wondering: What really happens during the process? Is it safe? How long does it last? And what should you expect during and after your salon visit?