Treatment is successful only when you make a few lifestyles changes and, of course, when the humidity level increases. A hot shower or bath feels great, but it opens your pores and ultimately dries you more. It helps to start with your normal temperature water then gradually end with the coolest water tolerable. Use a super-fatted soap. One with an oily base.
Fabric softeners are a common offending agent.
Limit or discontinue use when the air is dry. A humidifier is sometimes helpful, but change the water and clean it frequently.