My FACE skin was white in colour few years back. but now, it has became thick black, oily skin, with wrinkles and pimples and holes and very rough (dry) skin like some layers of skin has deposited(pigmentation type).. same thing happening in areas like Neck , arm pits.. at the same time, my body is white in colour, except FACE, NECK, ARM PITS , hands and lower legs My mother has some similar problem like this, she has the same dark thick skin at neck , but face is not like that.