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Remove stains with a scrub brush. Clear away stains with pumice. Apply an exfoliating scrub. See your doctor.

Article:
Tar can leave stains on your skin even after you remove it. Scrubbing your skin gently can remove any excess tar or staining from it. Gently rub a clean washcloth or soft scrubber brush over stains or lingering bits of tar. Then cleanse your skin and rinse it with warm water. Repeat the scrubbing process if necessary. Using a gentle circular motion, rub a pumice stone over any tar or stains. Use a mild soap together with the pumice stone if you like. Then rinse the area with warm water and pat it dry with a clean towel. This can easily and effectively remove any lingering tar or stains on your skin. If you have tar or stains that are particularly difficult to remove, use an exfoliating scrub on your skin. You can buy or make your own exfoliator. Spread a layer of your chosen exfoliator over the area with tar bits or stains. Gently rub the exfoliator into your the skin until the tar or stains are gone. Some easy exfoliators you can make at home include:  Baking soda Sugar and olive or coconut oil paste Salt and almond oil paste Finely ground oatmeal and honey paste In some cases, you may not be able to remove tar from your skin or have very sensitive skin after removal. Make an appointment to see your doctor if this happens. The doctor can diagnose potential problems, remove lingering tar or stains, and administer appropriate treatment to your skin. Get medical attention if:  You can't remove the tar You have lingering stains You have pain or discomfort that won't go away You notice injury or damage to the skin exposed to the tar