myHSteam

Could switching to an aluminum-based antiperspirant be triggering new HS boils under your armpit? It's a very reasonable thing to question, especially since the timing lines up so closely with the switch!

Aluminum is a common antiperspirant ingredient that works by blocking sweat glands. While it hasn't been definitively Show Full Answer

Could switching to an aluminum-based antiperspirant be triggering new HS boils under your armpit? It's a very reasonable thing to question, especially since the timing lines up so closely with the switch!

Aluminum is a common antiperspirant ingredient that works by blocking sweat glands. While it hasn't been definitively proven to cause HS flares, it is known to cause skin reactions in some people — and for those with HS-prone skin, that irritation could potentially contribute to a flare-up. When choosing a deodorant or antiperspirant with HS, the American Academy of Dermatology recommends avoiding products that contain:

- Alcohol
- Baking soda
- Dyes
- Fragrance

Aluminum isn't on that specific list, but it's still worth avoiding if your skin reacts to it. The best next step would be to stop using the new antiperspirant right away and switch back to your regular product when you can. Also, avoid applying anything directly to the developing boils — one myHSteam member shared that they apply deodorant around the sore and cover it with a bandage instead.

It's worth mentioning this flare-up to your dermatologist, who can help confirm whether the aluminum was the culprit and recommend a safe alternative.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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