If you're not too dirty or sweaty, use soap only on the genital area, the armpits, hands and feet. Pat your skin dry with a soft towel. Use a moisturizer like Eucerin, Aquaphor or Lubriderm. You may need to use it several times a day. Be sure to drink lots of water.
Water helps keep the skin moist.
Because laundry soaps can irritate your skin, you might try running your clothes through two rinse cycles. You may also want to try using a milder laundry soap. Wear gloves when you work with cleaning products that might irritate your skin. Use dust-proof covers on pillows, box springs and mattresses. Soak in the bathtub with oatmeal soaking products, like Aveeno, to help make your skin less itchy.