What products do i need to do this hair style?

you'll need a straightener definately. i had the same problem with my new haircut. i had hair to my waist and cut it to my shoulder blades andit got curly and poofy. my straightener saved it. if you don't want to fry your hair daily, try "herbal essences "dangerously straight" its in a pink bottle and you can get it at target. i haven't tried it myself, but it might work. also, my hair wasn't layered enough to give it a really shaggy look, so i told my friend how the stylist had done it, and she trimmed it up and did a pretty good job. if you decide to straighten your hair, and you have thicker hair, straighten it with your layers, starting with the bottom one. it gives it a "piecey" or separated look.