The skin shaders are comparable to the other realism kits by face_off. You can change the specularity, change skin tone, change oilness, change highlighting and spots. If you experiment with the settings you can get a wide range of different effects. The lips on the girl character were handled manually, but everything else was done using the face_off kits. The only thing that may be missing is that the M3 HyperREAL set had the option of adding wrinkles to M3. That option isn't available for Apollo, but it's not included for the P6 figures in the P6 realism kit either. The combination of a realism kit and the ambience occulsion kit/tutorial can really help your renders look a lot better :)