How to use common, inexpensive lemon juice to lighten and often remove age spots:

Fresh, organic lemons work the best. Cut a thin slice off the lemon, squeeze the juice into a shallow dish, dip a cotton swab into the juice and apply it to age spots with a gentle rubbing motion to work it into the skin. Do this twice a day, but be careful not to overdo it since lemon juice can be irritating and actually burn sensitive or irritated skin.

This remedy only works if you stay out of the sun while you are doing the treatment. Keep your skin covered at all times while exposed to the sun for up to 2 months. It usually takes 1-2 months to experience a noticeable lighting of the dark spots if you are being diligent about this treatment. Some people have reported seeing results immediately after only about a week of using this natural treatment. It depends on how severe the age spots are (how dark) as well as how regularly you apply the lemon juice and how diligent you are about keeping your face out of the sun while doing it.

Read full article here and how to tie a Shemagh.