Lemon is a popular ingredient in home remedies. A rich source of vitamin C and packed with several skin friendly nutrients, lemon helps to nourish the skin. Lemon juice is an excellent natural skin lightening agent. It is widely used for fading scars and reducing pigmentation. Lemon juice is added to face masks to lighten the complexion and even out the skin tone. Here is a video that shows you two amazing beauty uses of lemon for whitening the underarms and treating discolored lips.