hi doc iam vijay from chennai,i have a dark skin ,so i tried various products like oriflame ,olay and mANY more ,yes there was a lot of change but i started getting rashes on my face so i stopped ,AS usual my skin colour is back,,can u please suggest if there is any permanent solution to change my colour ,if not any treTments or pills,which can help,n laso i wanted to know the cost n the time frame