Hi. You'll need some skin lightening creams and proper strict use of sun screen is essential. If you stay in Lucknow, you could visit dr Ankur Talwar at Talwar skin institute in indiranagar or meet Dr Ajai rai. Both are good dermatologists from your city whom I have personally interacted with. If you have scars apart from spots, you may require laser treatment as well. Let me know if you need any further assistance in this regard. Best wishes.