Have detailed my car a couple of times but the headlamps nonetheless appear "dusty". The dust is on the inside of the outer lens (there is actually a tiny spider . . . yes, the real insect . . . inside the light compartment). I have been told that the light is sealed and cannot be opened, however, I am skeptical by virtue that the eight-legged little creature has found and entry path. I would like to clean the inside of this area and adjust the focus.