What causes colorism in India?

Anonymous
Growing up I saw all the actors on Indian movies and tv shows to be light skinned and I thought they were the majority of the population until two years ago when I travelled to this city that is full of Indian people , and I noticed that a lot of Indians are dark skinned.

I did a little research on the internet , and it turned out that colorism is a huge and rampant issue in India. That's why a lot of dark skinned people ( especially women ) face discrimination in all aspects of life, which resulted in the promotion of lightening products, which is so disgusting to me , because I believe the more natural you are , the more attractive you will be.

What causes colorism? and what efforts have been made to combat it?
What causes colorism in India?
What causes colorism in India?
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