White spot on face. Problem. : (

Sir/ Ma'am I don't know why but always this happens to me every year white spots start appearing on my face and i don't know what to do, and what to apply on face. I have pimple marks also. 1 and half years back I went to a doctor, I'm from Patna by the way. He was really good hut that cream and all the medicine made me look so fair that my own friends were shocked how come In such a short period I can look so good anyway. As it was prepared by using so many chemicals, i stopped using it when my white spots disappeared. But now again after 1 and half years I have a small white spot on my face though this time it's a small one last time it was everywhere on my face. So please suggest me how can I help my self if possible then tell me about herbal/home made face packs or whatever is good for all these things. And what precautions can I take for now and for future so that i don't face such problems again. And my face remains clean and I don't suffer from such skin/face problem. :(