Try raw potato

Due to its high vitamin C content, the juice from potatoes is believed to work as a skin lightener. Vitamin C is used in many skin lightening products. To try it, simply cut a well washed potato in half, then rub the exposed flesh over the skin you wish to lighten. Leave for 10 to 15 minutes, then wash off.Cucumbers and tomatoes are believed to have similar skin lightening properties, as they also contain high quantities of vitamin C.