If your skin has become dark due to some reason, you can use lemon juice for lightening the skin color. The juice also helps in treating freckles. The only problem with using lemons is that it causes skin reaction on exposure to sunlight. Therefore, when you use lemon juice you should not go out in the sun. Lemon whitens the skin due to its bleaching properties. We will explain the method of using lemon juice for skin whitening. Avoid using ready made lemon juice. Use only freshly extracted juice. Do skin test to check if lemon juice causes allergy or other problems. The following article explains how to use lemon juice to whiten skin.