Fair skin can be achieved with certain medications. It takes a couple of months to see the results. It is not a permanent skin whitening so you will have to continue with maintenance treatment till the time you wish to see the results. You can consult with a qualified dermatologist to know more about the results you can expect, side effects of the treatment, cost etc so as to make a informed decision. However rather than focus on fair skin you should focus more on how you can get a healthy skin.
Next Steps
Contact a qualified dermatologist with degree MD/DNB (skin),DDVL/ DDV in your area who administers these medicines with proper precautions. You may have to do some research since not all dermatologists give this treatment.
Health Tips
Avoid quacks/ cosmetologists who do not have above mentioned degrees as they may not give you all the details especially regarding side effects of this therapy.