Sir, I Have A Light Brownish Dark Complexion In Face,

sir, i have a light brownish dark complexion in face, neck and arms specially.i want to be fair desperately and i want to know creams which will have a fast action.also is it possible to maintain that fairness. i have starte using dr reddy s clearz plus..can i use demelan for whole face,neck.and can it be used long term