Question

low hemoglobin makes the skin look dark in dark skin

Answer 1

when lack of hemoglobin it is so sevier disease
which can affect the mealean hormone which decides the colour of skin.
This disease can takes a long time to cure.

Answer 2

Melanin is in the epidermis of the skin, carotene is in the dermis and hemoglobin is in red blood .So the color of the skin depends on the melanincells within the capillaries in the dermis..

Hope This Will Help You 
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