This software is really easy to use, and one of its most important features is the possibility to modify the face expression of whoever is in the photo. If the face can be viewed perfectly, FaceFilter Studio allows you to indicate some facial points that the program can use to change the person's expression in a more or less realistic manner. The expression can be hardened or softened, but we should be careful not to over do it, otherwise we'll start to notice that the photo has been tampered with.
Furthermore, FaceFilter Studio allows many other less aggressive modifications, like for example: eliminating red eyes, applying effects, enhancing skin color, remove imperfections, and other small enhancements that improve the photo's general quality.
The program's interface is rather simple, very graphical, and with everything very well explained. Many of the enhancements are carried out by means of an assistant that indicates each step that we have to take to reach the result we're looking for.