Obvious, yes. But a staple nonetheless. For most minor cuts and scrapes, washing with soap and water, then letting them heal on their own is the best prescription. Letting them "breathe" speeds up the healing process, Khatri says. But for deeper cuts, or ones that are likely to get dirty or further injured, covering with a bandage protects wounds until they scab over. For deep or dirty gnashes, see your doctor to get checked for infection—and a tetanus shot (if you haven’t had one in the last 10 years).