Your cotton dress shirts will last longer if you follow some simple care instructions. If you are washing at home, use a cold water setting, then tumble dry on a delicate cycle. While your shirt is still damp, use a warm iron to get those wrinkles out. If you have your shirts professionally laundered, ask for light starch.
For non-iron cotton shirts, use the same wash and dry settings mentioned above. Simply remove the shirts from the dryer while they are still warm and you will be able to put them on without even looking at an iron.