Depends on how bad
Depending on how bad a wound is, along with its surrounding skin, one can decide on how long to keep it wrapped with gauze.
If there are oozing skin abrasions
, gauze will help soak up the ooze and prevent germs from getting to the abraded area. The gauze should be changed more than once a day if needed. If the skin is fine, and the wound is stitched-up and is dry, gauze may be needed for 3-4 days.