Lemons have natural whitening properties for both the skin and hair. According to WebMD, the vitamin C in citrus fruits--such as lemons--can fade brown spots. Whether you have blemishes, dark spots due to old age, or an unnatural tan that you want to eliminate, use lemons to lighten and tone the skin. There are several different ways to use lemons to achieve the results you desire for bleaching, and you may want to try a combination of methods.
Cut two lemons in half, remove the seeds and squeeze the juice. Pour this juice into a spray bottle and fill it with distilled water. Spray this on your skin everyday until you achieve the desired level of lightening.
Fill a small bowl with 1 tbsp of sugar. Squeeze a lemon into the bowl and mix it well. The lemon and sugar mixture should make a thick paste to be used as a scrub. Apply this mixture over your skin while gently massaging and leave it for about five minutes. Wash your face with warm water. Do this repeatedly for several days until you see the results you want.
Mix equal parts of honey and lemon juice and apply the mask on your skin to create an advanced lightening effect.
Mix equal parts of aloe vera juice and lemon, and apply to the skin.
Mix equal parts of chamomile tea and lemon juice. Consider mixing lemon juice with oatmeal or cucumber, as both have calming properties.
Be careful when applying lemon to any open scars or pimples as the acid in the lemon could cause burning.