You 'bout to blow your cover when you cover up
Don't you know your imperfections is a wonderful blessing
From heaven, is where you got it from

from Kendrick Lamar (Ft. Colin Munroe) – No Makeup (Her Vice) Lyrics on Rap Genius

Meaning

When she wears makeup to “cover up” her flaws, she is admitting to the world that she is not naturally beautiful (“blows her cover”). Also, by using so much makeup she makes it obvious she’s covering something (in this case her bruises) up

Girls are losing a sense of individuality. Their imperfections make them unique and girls who put on too much makeup cover an imperfection, or uniqueness, which may actually be considered an asset from the mans perspective.

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