most pictures from shoots are photoshopped and airbrushed so the skin looks much cleaner. If you get a professional photoshoot done, good photographers give super awesome neat perfect pictures!
i agree, but there's only so far you can go with editing. i am a graphic designer too, and do this kind of stuff myself as well ... and there is an extent where you just have to stop and protect the picture from looking fake. i mean not like it isnt already fake, but fake in the sense plastic and noticeable fake. you wouldnt put pink on the eyes, if that was not needed in the end anyways ...
and the pictures of my friend ... her skin looked really nice in them, all glowing ... but i couldnt ignore the chamki eyes ... and the fact that in real she is a very petite girl, but in pictures her faced looked quite big ... (something that happens with moi too 0_o )