Based on the reviews of Nike Dunks, the shoes are known for creasing even one day after wearing them. There are decreasing methods for all shoes, but Nike Dunks need daily care as they crease easily. It will take effort to protect your Nike Dunks but the effort will be worth it when looking at your shoes at the end of every day.
Things You'll Need
Put a piece of cardboard on a hard, flat surface. Place your Nike Dunks on top of the cardboard.
Trace around the front end of the Nike Dunk shoe with a pencil on the cardboard (see image). If you get any pencil marks on the shoe, they will erase right off.
Cut out the shape that was drawn on the cardboard. Cut about 1/2 inch to an inch inside of the line (see image).
Place the arch shape that was cut out inside of the Nike Dunks. It should fit snugly at the front, top end of the shoe. As you wear new shoes, they begin to crease to the motion of your feet. The cardboard stretches the shoe out again to make it appear as though it has never been worn.
Stuff the Nike Dunks tight with clean balled up socks. This will prevent creases in other places of the shoe. This is why shoe manufacturers fill the shoes with paper before selling them. Repeat step 4 and 5 every time you remove your shoes from your feet.
Repeat the same steps for the second shoe. Make new cardboard pieces every two weeks. The old cardboard will eventually weaken and become ineffective. If the shoes are only worn in moderation, you can prevent creases for two months or more with this method.