A reason for dark spots appearing below the breasts is continued and long use of a bra with underwires. The wires chafe against the skin and the constant friction eventually darkens it. It is possible for people who have large stomachs to have this particular problem, even if they do not wear underwired bras. The stomach rubs the elastic of the bra against the skin and this causes the same kind of friction. You should avoid wearing a bra for more than 12 hours a day if possible. This will be the first step in dealing with the problem. You must also stop wearing polyester or synthetic bras and start wearing cotton ones. For the already darkened skin, apply a mix of turmeric powder and lime juice. It will lighten the skin. Apply a thick layer of yogurt with a few drops of lime juice in it and leave it on for about half an hour. Alternatively, you can also add some dried and powdered orange peels or oatmeal to the yogurt. Rub the juice of one grated potato to the dark skin and wash off with water after it dries. You can also rub strawberry pulp onto the dark patches, this is known to be highly effective in lightening any kind of dark skin.
answered by G M