Rub each pearl individually with a soft, clean cotton cloth dampened with a solution of two cups warm water and a few drops of a mild dishwashing liquid, like Joy. (Soaking strands of pearls can cause the string to stretch.) Let air-dry overnight.
Care Tip: Put on pearls after applying cosmetics and hair spray, which can discolor pearls. For greater luster, wear pearls frequently, so they can absorb your skin's natural oils.