Family Learning Center

I have seen documentaries on the science of beauty that claim that symmetry is of utmost importance in whether or not you are beautiful. One source points out, by way of example, that Denzel Washington is almost perfectly symmetrical while Lyle Lovett has an asymmetrical face.
My question is whether symmetrical features result in beauty or are symmetrical features a by-product of beauty? For example, even if Lyle Lovett had symmetry he would not be judged as extremely good looking. So is the axiom saying that unattractive people are by nature not symmetrical? Does an inherent correlation exist between symmetry and beauty – that you can not have one without the other – if you are symmetrical you are beautiful and that if you are unattractive you are by definition not symmetrical?