Move to a cool, shaded, or air-conditioned place
Remove tight or sweaty clothing
Keep the skin dry and cool
Take a cool shower or bath
Use a cool compress on the rash for 10 to 15 minutes at a time
Apply calamine lotion if the skin is itchy
Use a fragrance-free, gentle moisturizer if the skin feels irritated
Avoid heavy creams, oils, and ointments
Stay hydrated
Avoid sweating, heat, and direct sun
Wear loose, breathable cotton clothing
Do not scratch or rub the rash
Use an over-the-counter hydrocortisone cream only if needed and directed
Seek medical care if the rash worsens, lasts more than a few days, or shows signs of infection