(Concentrating on the way my) eyeliner thickens
(He stand behind me and try to) figure her vision
(Of prettiness, the wittiness of colors on my skin tone)
(My complexion in a direction) I've outgrown

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

Meaning

She knows he is trying to figure out why she puts on so much makeup.

Part of the abusive relationship theme. Shes talking about why hes watching her, he interrupts her and finishes her sentence (more than once in the verse) its the idea of him covering up the truth shes trying to tell by interrupting her before she finishes her talking.

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