3 years back I was residing in delhi after that I moved to noida, when I was in delhi or earlier my skin was so fair (face, neck, hand, legs) but since I moved to noida it's being 3 years my skin going dark day by day, I didn't change anything in my life style, but still affected, I would like to know is it water in noida because in noida water is quite sour other than that nothing is changed, please help give me right suggestions, I want my fair skin back thanks.