Red, itchy underarms? It could be your deodorant. But don’t sweat it — here’s how to avoid armpit rash.

Deodorant is usually your daily hero, keeping you fresh and confident. But what if it starts causing a red, itchy rash instead?

Before you ditch the deodorant, let’s explore what might be irritating. Is it the ingredients? Are you using too much? Read on to find out how to keep your underarms happy and rash-free.

You’re just out of the shower and swiping on your favorite deodorant, expecting to stay fresh all day, but instead, your underarms decide to throw a tantrum. That’s a deodorant allergy in action!

It happens when your skin decides it’s not a fan of one or more ingredients in your deodorant or antiperspirant. The result? Redness, itching, swelling, or even a painful rash that makes you wish you’d just gone au naturel.

While deodorants are supposed to be your BFF in the battle against body odor, they sometimes bring some unfriendly side effects, thanks to certain chemicals and fragrances that can turn your pits into an itchy nightmare.

Here’s what to watch out for if you suspect your deodorant is causing an allergic reaction:

  • Redness or discoloration and swelling. Your skin may appear inflamed or swollen where the deodorant was applied.
  • Itching or burning. A common symptom that can range from mild discomfort to severe irritation.
  • Rash or hives. Small, red bumps or larger welts may form, irritating your underarms.
  • Dry, flaky skin. The affected area may become dry and start to peel.
  • Blisters. In more severe cases, blisters filled with fluid can develop, adding to the discomfort.

Certain deodorant ingredients are more likely to trigger allergic reactions if you have sensitive skin. Here are some common culprits:

  • Fragrances. Synthetic scents are often added to deodorants to keep you smelling fresh, but these fragrances are a leading cause of allergic reactions.
  • Alcohol. Commonly found in antiperspirants, alcohol helps to dry out the skin and prevent sweating. However, it can also strip away natural oils, leaving the skin dry, irritated, and more prone to allergic reactions.
  • Aluminum compounds. Used in antiperspirants to block sweat glands, aluminum compounds can cause irritation or allergic reactions for peeps with sensitive skin.
  • Parabens. These preservatives extend the shelf life of cosmetics but can lead to skin sensitivity or allergic reactions. They’re known to disrupt hormone function, further aggravating sensitive skin.
  • Baking soda. Found in many natural deodorants, baking soda is used for its odor-neutralizing properties. However, its alkaline nature can be too harsh for sensitive skin, leading to irritation, dryness, or a rash.
  • Essential oils. While natural and often considered gentle, some essential oils can still cause allergic reactions, particularly for more sensitive folks. Oils like tea tree, lavender, and peppermint can be irritating or cause contact dermatitis.

If you suspect your deodorant is causing an allergic reaction, here’s how to treat it:

  • Ditch the culprit. First things first, stop using that deodorant immediately. Toss it in the trash — or at least banish it to the back of the cabinet. Continuing to use it will only make your skin angrier, so let’s not go there.
  • Clean it up. Wash your underarms with mild, fragrance-free soap and lukewarm water to remove leftover residue. Don’t scrub like you’re sanding wood — just a soft, soothing cleanse to help clear away the irritants.
  • Soothe the burn. Grab some over-the-counter hydrocortisone cream to calm that fiery rash, or go all-natural with some aloe vera gel to cool things down. Your skin needs some TLC, so slather on whatever works best for you.
  • Detox those pits. Ever heard of an armpit detox? It’s a thing, and it can help get rid of any residual nasties. Mix some bentonite clay with water or good old apple cider vinegar, plop it on your pits, and let it sit for 10-15 minutes. Rinse off, and your underarms will be feeling fresh and clean.
  • Switch to something gentler. Once your skin has calmed down, it’s time to find a new deodorant BFF. Look for something hypoallergenic, fragrance-free, and made for sensitive skin, or use a light dusting of cornstarch or baby powder to keep things dry without causing more drama.

Deodorants may cause an uncomfortable underarm rash if you have sensitive skin or are allergic to one or more ingredients.

If your pits are unhappy, stop using the deodorant, soothe your skin, and give your pits a break. Once they’ve recovered, look for a more gentle alternative to keep you dry and delighted without the unwanted side effects.