Pack It With Ice
Anything that cools the temperature of your skin will reduce the itching and swelling. If you don’t have time for a cold bath, put an ice back or a cool compress on the rash for 10 minutes every 4-6 hours.
Add Some Magic Power
Add a few of tablespoons of baking soda to your bath water and soak. This will ease the itching and make you feel more comfortable while the rash heals. You can also try adding baking soda or cornstarch directly to the rash to absorb the moisture and sweat. Reapply every few hours, rinsing and drying your skin first.
Slather and Soothe
Apply aloe vera gel or calamine lotion to your affected skin two to three times a day to relieve itching and promote healing. Be sure to wash and dry the skin before each application.
Get Out In The Air
If you have blisters along with the rash, do not cover them up. Fresh air will speed up the healing process.
Prevent The Rash From Happening
If you’d like to prevent the discomfort of heat rash in the first place, there are things you can do:
1. Limit your physical activity in extremely hot and humid weather and cool yourself down with a cold shower as often as needed.
2. Wear loose cotton clothing to help keep your skin dry; tight fighting clothing made of nylon or polyester should be avoided.
3. Increase your intake essential fatty acids to help curtail inflammation in the body, making you less susceptible to rashes.