A dry, itchy rash can last for days or weeks depending on the size of the affected area. The distraction caused by an itchy skin rash makes it difficult to complete simply daily tasks and makes sleeping almost impossible. Reduce the effects of a skin rash using household items such as cornstarch and baking soda. Carry cornstarch with you on camping and hiking trips in case you develop a rash when away from home.
Inspect and clean the affected area with warm water. Pat dry with a soft cloth. Wait until the area is completely dry before applying cornstarch.
Mix 1/4 cup cornstarch and 3 tbsp. of water to make a paste. Cover the rash with the paste and allow it to dry on your skin. Rinse off the paste with warm water. Repeat as necessary until the rash heals.
Add 1/2 cup of cornstarch and 1/2 cup of baking soda to warm bath water. Soak in the bathtub for at least 30 minutes once per day to reduce itchiness on larger areas of the body.
Also use cornstarch to relieve sunburn or to starch clothing.
Seek medical attention if your skin rash worsens or does not clear up within a week as you may need medication.