Why are beauty standards eurocentric except for skin color?

Globally, beauty standards are eurocentric facial features such as huge large eyes and pointy nose and angular face, etc..
However skin color is exception. No matter what the skin color is, facial features must be eurocentric to be pretty. Megan fox, kim k, most models have eurocentric features,, for example.
Why are beauty standards eurocentric except for skin color?
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