Hello,
We are all born with different skin colours. There are various different shades from light to dark, to all things in between. The skin colour we are born with is not susceptible to great change. For this reason, it is very important that we learn to accept and love ourselves as we are.
While there are fair creams on the market, these are highly toxic and are proven to be cancer inducing. Further, these will not make darker skin 'white', they may only lighten the skin a little. Either way, it is a huge price to pay for a small difference.
A lot of people in the media have come under heavy scrutiny for using skin lightening products, and often receive mass backlash since we are living in a time where cultural significance is largely important, and people find it uncomfortable to see others straying away from their heritage. Either way, what other people think is irrelevant, but it is important that you learn to find confidence in yourself, just exactly as you are.
I hope this helps.