How to Treat a Heat Rash on Your Face

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Heat rash is a skin irritation that occurs when sweat glands become clogged. It is common in hot, humid weather. [1] Fortunately, heat rash is rarely serious and usually resolves on its own within a few days. While it can occur anywhere on your body, heat rash can be particularly irritating on your face. If you’re experiencing heat rash on your face, start by rinsing your face with cold water to remove any excess sweat. Then treat the itching and irritation with cold compresses and antihistamine lotion. At the same time, take steps to cool your whole body down like taking breaks, sitting in an air-conditioned room, and drinking cold water.

Method 1
Method 1 of 2:

Providing First-Aid for Your Face

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  1. Heat rash develops in hot, humid weather when you sweat profusely. Your skin will feel itchy and prickly. Then you'll notice small bumps or blisters emerge. If you see these symptoms, you could be developing a heat rash. Take steps to cool yourself off and wash the affected area. [2]
    • There are 3 common types of heat rash. Miliaria crystallina only affects the told layer of skin and forms clear blisters or papules. It's the mildest form of heat rash. Miliaria rubra occurs deeper in the skin. It produces red bumps and severe itching. Both forms are mild and should clear up on their own with care. [3]
    • Sometimes, the sweat glands get more seriously inflamed, which leads to miliaria pustulosa. This causes the sweat glands to fill with pus. It is a more serious form of heat rash. [4] If you see pus in the rash, call your doctor for an assessment.
  2. Wash your face with cold water and mild soap. Heat rash is usually caused by excessive sweating and blocked sweat glands. Washing your face removes excess sweat from your skin. Use cool water to lower your skin temperature and stop yourself from sweating more. Stick with a gentle, fragrance-free soap, such as a facial cleanser, to avoid irritating your skin further. [5]
    • Do an exfoliating routine as well. This flushes out your pores and clears blockages. Rub an exfoliating cream onto your face while it's still wet. Use a circular motion when you apply the cream. Then rinse your face thoroughly with clean water. Remember that any cream should be gentle and fragrance-free.
    • Gently pat your face dry with a towel. Rubbing can irritate your skin further.
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  3. Cutting down on your sweat levels is important for treating heat rash. A fan not only helps cool your skin, but it also makes moisture evaporate faster. This all reduces your sweat level and prevents the rash from getting worse. [6]
    • The fan doesn’t need to be on high power. Just focus a gentle airflow on your face to keep your skin cool and dry.
  4. Cold packs reduce the swelling and inflammation that comes along with heat rash. Find either a gel ice pack, a bag with ice, or a bag of frozen vegetables. Then wrap this in a towel and hold it against your rash. [7]
    • Don’t hold ice on your face for more than 20 minutes at a time. Apply the ice for 20 minutes, take it off for 20 minutes, and then ice the rash again. Repeat this 3 times.
    • If you don’t have anything to use for a cold pack, run a towel under cold water and hold that on your face instead. Re-wet the towel so it stays cold.
  5. Heat rash is often irritated and itchy. If your rash is bothering you, visit a local pharmacy and get a bottle of calamine lotion or hydrocortisone cream. Apply a thin layer to the rash to reduce the itching. [8]
    • Use only a thin layer so your skin can still breathe. A glob of lotion can clog your pores further and make the rash worse.
    • Avoid oil-based creams and ointments. These can clog your pores even more.
    • In general, you should not use hydrocortisone cream on a child younger than 10 years old. Ask your doctor before using this product on your child. [9]
  6. The rash is uncomfortable and itchy, and you’ll be tempted to scratch it. Avoid this urge. Scratching will irritate the skin even more and make your rash worse. It’s better, in the long run, to ignore the itching and take these other steps to help the rash heal. [10]
    • If the itching gets hard to deal with, reapply the cold pack. This will numb your skin so you feel less itchy.
  7. Heat rash usually resolves on its own without medical help. Some cases are more severe, however, and require a doctor's attention. If you've been treating the rash for 3 days and it hasn't gotten better or has gotten worse, schedule an appointment with your doctor to have the rash evaluated. [11]
    • Heat rash blisters sometimes get infected. Visit your doctor if you see pus and increased swelling on the rash.
    • If your heat rash is associated with a fever, fainting, dizziness, or nausea and vomiting, seek medical attention right away. These could be symptoms of heatstroke, a life-threatening condition.
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Method 2
Method 2 of 2:

Cooling Your Body Down

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  1. Once you notice a heat rash forming, it means your body is overheating. Don’t delay in cooling your body down. Get out of the heat and into an air-conditioned building as soon as possible. This will prevent the rash from getting worse and stop other heat-related problems like dehydration. [12]
    • If you aren’t near your home, try entering a store or coffee shop nearby. Establishments like these should be air-conditioned, and you can take a few minutes to cool off in here before making your way home.

    Tip: When you're working or exercising outside in a hot or humid environment, take frequent breaks so you don't get overheated. During your breaks, rest, drink water, and cool off with a fan or ice. [13]

  2. Staying hydrated is critical in hot weather. If a heat rash has started forming, it’s possible you’re already dehydrated. Begin drinking cold water as soon as possible to replenish lost fluids. This will not only prevent dehydration but cool your core body temperature down as well. [14]
    • General advice is to drink 8 glasses of water every day. This is a good guideline, but in hot weather, you might need more. Drink enough so that you don’t feel thirsty and your urine is a light color. [15]
    • Don’t chug water very quickly if you feel dehydrated. This could shock your body and cause vomiting. Drink normally and consistently to re-hydrate your body.
  3. Take a cool shower to lower your body temperature. If you’ve moved inside and still feel overheated, try taking a cool shower. This will bring your core body temperature down enough to ward off further heat rashes. Rinse off your rash while you’re in the shower as well. This removes any excess sweat and dirt that can irritate your skin even more. [16]
    • The shower water doesn’t have to be cold. As long as the water is cool, it will lower your body temperature.
    • If you have a pool, you could also jump in there to cool yourself off. Stay in for a few minutes to get your core body temperature down.
  4. Once you get yourself cooled down, stop yourself from overheating again. Wear loose-fitting cotton clothing to you’re your body cool and avoid sweating more. As long as you stay cool, your heat rash shouldn’t get any worse. [17]
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      Tips

      • If you have to go out in the heat, take regular breaks. Rest in the shade and go into an air-conditioned room for a few minutes to avoid overheating.
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      • Always bring a water bottle with you when you go out in hot weather.
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      References

      1. ↑ https://my.clevelandclinic.org/health/diseases/22440-heat-rashprickly-heat
      2. ↑ https://my.clevelandclinic.org/health/diseases/22440-heat-rashprickly-heat
      3. ↑ https://dermnetnz.org/topics/miliaria
      4. ↑ https://www.ncbi.nlm.nih.gov/books/NBK537176/
      5. ↑ https://www.cdc.gov/niosh/topics/heatstress/heatrelillness.html
      6. ↑ https://familydoctor.org/condition/heat-rash/
      7. ↑ https://www.nhs.uk/conditions/heat-rash-prickly-heat/
      8. ↑ https://www.healthdirect.gov.au/heat-rash
      9. ↑ https://www.nhs.uk/medicines/hydrocortisone-for-skin/who-can-and-cannot-use-hydrocortisone-for-skin/
      1. ↑ https://www.nhs.uk/conditions/heat-rash-prickly-heat/
      2. ↑ https://my.clevelandclinic.org/health/diseases/16425-heat-illness
      3. ↑ https://familydoctor.org/condition/heat-rash/
      4. ↑ https://www.cdc.gov/niosh/topics/heatstress/recommendations.html
      5. ↑ https://www.nhs.uk/conditions/heat-rash-prickly-heat/
      6. ↑ https://www.health.harvard.edu/staying-healthy/how-much-water-should-you-drink
      7. ↑ https://www.nhs.uk/conditions/heat-rash-prickly-heat/
      8. ↑ https://www.healthdirect.gov.au/heat-rash

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