It is interesting how skin color is based on light particles hitting the subject. Two images one is underexposed adjusted in post and other is overexposed adjusted in post.
Underexposed Photo(left) Corrected on post (right)
Overexposed Photo(left) Corrected on post (right)
More light means whiter complexion and less light means darker complexion. The main character of the image is based on the captured exposure that dictates the quality of the skin. 2 stops above and below could give you the desired base for adjustments.