How can I edit out sweat stains in pictures on my iPhone?

To edit out sweat stains in pictures on your iphone, you can use photo editing apps like Adobe Photoshop Express or Snapseed. These apps have tools like the healing brush or spot removal tool that can help you easily remove sweat stains from your photos. Simply open the photo in the app, select the tool, and carefully brush over the sweat stains to make them disappear.