Although soft, canvas hats are easy to wear with their lightweight material, they crease easily if stored wet or stuffed in a tight space. Canvas hats come in a few different shapes -- some of which you can launder at home. For other shapes, you can smooth out wrinkles with a handheld steamer. Avoid future creasing by storing hats properly, upside down on their crown. It may help to stuff out the shape of the hat with a hand towel to help keep its original shape.
Examine the manufacturer's care label located inside the hat. If indicated, wash the hat with a gentle laundry detergent, then tumble dry. Remove the hat while it is slightly damp. Flip the hat on its crown and allow it to finish drying.
Fill a handheld steamer with water. Allow the steamer to heat up. On many machines, this is indicated by a flashing or solid light.
Place the hat over your fist. Use the other hand to hold the wand. The steam will be hot, so avoid pointing it toward the skin.
Pass the wand over the creased area, pressing the steam button to remove the crease. Keep the wand 8 to 10 inches away from the hat to avoid over saturating the fabric.