Interested because the performances should be avoided. Although we often we choose something based on appearance.
In this context, do not be attracted to a woman just because she looked attractive (beautiful) and do not want people attracted to you just because you are attractive (handsome).
Because appearance is one measure of the most apparent. most easily changed.
For example when you look is very neat. At other times people who are interested in you are met at your back, and you're "being yourself is". Without makeup,,. Imagine what would...