The first item in our series? A pair of scissors.
Professional: Lauren Popper, hairdresser at La Maison Salan & Spa in Short Hills, New Jersey.
Pro Tool: A pair of 1977 Nic shears, made in Japan.
Why it's a Pro Tool: "You will see the difference, you will hear the difference in a haircut because [cheaper shears] will clank. You won't have a clean line. I see a total difference in how my haircuts look and how they grow out."
Cost in 1977: $175.
Cost today: Up to $1,000.