Image Credit:
Digital Vision/Digital Vision/Getty Images
The difference between luscious moist lips and those that are dry is that moist lips reflect light. To give a dewy gloss to any set of lips using photo editing software, all you have to do is add a bit of shine. You don't need an expensive app like Photoshop to this. Any photo editor that lets you add layers to a photo should work well. If you don't already have such an app, GIMP, Paint.net and Krita are all free to download.
The Basic Process
Video of the Day
To add some gloss to a set of lips, open the photo in your graphics editor and select a color
Video of the Day