I really don't care much about looks/fashion, but this seems like a serious skin problem to me.
Ever since I was about 17, I have noticed that my elbows/knees turned black as well as the back of my neck. After scrubbing/cleaning my elbows and knees better for a while, that problem got solved, but my neck isn't getting any better. Any solutions? I've tried a lot of things my mother has suggested and nothing has worked in over a year. I've tried milk/lemon juice/turmeric mixture, special soaps, etc.