The problem with unwinding it is you don't get to keep it as long. Mine stayed in my hair for almost 10 months. But, little by little pieces of hair broke off so in the end it just fell off one day. It was just a tiny amount of hair though so no big deal, but I did have it underneath and behind my ear. I wouldn't that hair growing back on top of my head. If you plan on unwinding it, it won't matter either way!