Beauty is only skin-deep

Beauty is only skin-deep.

Prov. A person who looks beautiful may not have a pleasing personality; a person's good looks may not last. Fred: I hope Nancy will go out with me. She's so beautiful! Jane: I hate to disappoint you, but in Nancy's case, beauty is definitely only skin-deep. Don't be so proud of your pretty face. Beauty is only skin-deep.
See also: beauty