14 Heat Rash Remedies: At-Home Treatment and OTC Options

Heat rash remedies include oatmeal baths, baking soda, and other at-home treatments to deal with symptoms of itching and burning. Over-the-counter (OTC) medications and environmental changes, like using fans or taking cool showers, also can help.

Sweat trapped under the skin blocks sweat glands and causes heat rash, often in armpits or the groin. A heat rash appears as small, pink bumps on light skin tones and white bumps on dark skin tones. Heat rash isn’t typically serious but it can be very uncomfortable.

1. Oatmeal

Colloidal oatmeal can soothe, soften, and increase the skin's moisture. Research shows that colloidal oatmeal can do this for many different types of rashes.

Colloidal oatmeal has the following benefits:

• Reduces inflammation
• Improves skin dryness
• Reduces scaling
• Reduces roughness
• Reduces itch intensity

You can find colloidal oatmeal in preparations that you can add to a bath or in lotions you apply directly to the skin.

2. Sandalwood

Research found sandalwood oil has the following properties, which may relieve the symptoms of some skin conditions:

• Anti-inflammatory
• Antimicrobial
• Antiproliferative (inhibits cell growth)

Keep in mind that essential oils should be used with caution and typically require a carrier oil when applied to the skin. Some people may be allergic to sandalwood oil.

3. Baking Soda

Baking soda is used to treat skin conditions like eczema because it helps relieve the itch associated with some rashes. If your heat rash is very itchy, a baking soda paste or bath could offer some relief.

4. Aloe Vera

Aloe vera is a gel many apply to skin ailments like sunburn. However, it can also be used for other skin wounds and rashes for similar relief.

Research has found aloe has the following properties and may offer relief from heat rash symptoms:

• Anti-inflammatory
• Skin protection
• Antibacterial
• Antiviral
• Antiseptic
• Wound healing

5. Talcum Powder

Talcum powder is made from talc. Some use it to help keep skin dry and prevent rashes. However, talcum powder has been linked to some kinds of cancer in humans when it is not asbestos-free.

You may want to limit or avoid using it or choose a powder without talc.

6. Neem

Neem is a traditional medicinal plant that may help with rashes, including heat rash. It has the following properties:

• Anti-inflammatory
• Antibacterial
• Analgesic
• Antiviral
• Antifungal
• Immunomodulatory
• Antioxidant

Apply neem oil directly to the skin. Look for organic oils not sourced from plants exposed to fertilizers and pesticides. Always use diluted oil and test it on a small skin patch first.

7. Epsom Salt

Epsom salts are often used in baths to relieve tension and soothe skin. Epsom salt baths may also help with heat rash. Add about 2 cups of Epsom salt to warm water to use in a bath. Soak for up to 15 minutes.

8. Cool Baths and Showers

Cooling the skin is a critical step in treating heat rash. A cool bath or shower can be an excellent first step. You can bathe for up to 10 minutes, being careful not to get chilled. Repeat up to three times a day.

9. Fans and Air Conditioners

Along with cooling the skin with a bath or shower, you should also reduce the air temperature in your home. Lower the central air temperature or turn on your window air-conditioning unit.

Alternately (or additionally), sitting in front of a fan may provide extra relief.

10. Wear Light, Moisture-Wicking Clothing

One of the keys to resolving heat rash is to reduce sweat and heat on the skin. Stay away from tight, warm, clingy clothes. Opt instead for light, moisture-wicking clothing. Loose cotton tops, tunics, dresses, and flowy bottoms are all excellent options.

11. Ice Packs or Cold Washcloths

Reduce the heat on your skin by applying a cool compress directly to the area. You can either use ice packs or a cool, wet washcloth.

12. Ointments

Calamine lotion is a good option for instant itch relief. When you apply calamine to the skin, it dries, leaving a film of medication behind. Calamine lotion is anti-inflammatory and antipruritic (anti-itch). You can find it online, in pharmacies, and in drug stores.

13. Antihistamines

Antihistamines like Benadryl (diphenhydramine) can help relieve the itch associated with heat rash. Options for OTC antihistamines include topical creams or tablets.

14. Steroid Creams

Steroid cream is a primary cream that relieves heat rash. Topical steroids (corticosteroids) reduce inflammation and itch. This makes them an excellent choice for heat rash symptoms. These are available OTC, and a stronger preparation is available by prescription.

When to Contact a Healthcare Provider

You should contact a healthcare provider if your heat rash doesn't go away within a week or is accompanied by the following:

• Pain
• Intense itching
• The rash appears to be infected

Summary

There are many methods for treating heat rash at home, including at-home remedies, self-soothing treatments, and OTC medicine. Whatever you choose, aim to cool and soothe the skin and reduce friction. When treated early and effectively, heat rash doesn't last long.