>>12053349It could be the opposite, though. Asymmetric faces may stick out more in your memory because they have strikingly noticeable characteristics. If everyone had a perfectly symmetric face, it may be more likely your brain would mix up some people's faces with others. You'd consider their face kind of unmemorable, even though they're attractive.
My guess is it doesn't have anything to do with how the brain stores, represents, or remembers the face, but just ordinary natural selection. More symmetry = likely less genetic defects/good genes = likely something natural selection would drive you to prefer to reproduce with. Unusually high or near-perfect symmetry could have the opposite effect, though, because it could make you think it's not something you're supposed to reproduce with, or perhaps is some sort of trick. Hence the uncanny valley
