DO stock up on bobby pins, cute clips, and other hair ornaments. If a certain cowlick isn’t obeying your styling product, stick a pin in it or cover it with a sleek headband. But raiding the hair product aisle at the local Target should be as far as you go when it comes to taming your mane—DON’T try to cut it yourself. There’s a process to how hair grows, and unless you’ve logged in experience of your own as a stylist, you may not understand how it all works. Leave the trimming to your trusted stylist.