only in the render because of lights and shades
Switch to smooth shaded mode, and see if there is still a problem without the texture maps. If it is still there, then the problem is the geometry of a figure. So, you can consider-
1) Increasing the sub-division level of rendering. It may smooth out the sharp surface and shadows, of course.
2) Tweaking some morphs on the nose.
If the problem is not because of the geometry then it should be because of the texture.
1) Use any photo editing program you'd prefer. For me, I would use photoshop. There are tons of methods out there for removing unwanted parts of the picture. I may use the patch tool. So that the edited version can be achieved in seconds.