Aluminum Chloride for Excessive Sweating
Aluminum chloride is a topical antiperspirant used to reduce excessive sweating, also known as hyperhidrosis. It is most commonly used for excessive underarm sweating, although some formulations may also be used on the hands or feet. In the U.S., aluminum chloride is available in both over the counter and prescription-strength products. The concentration and directions vary by product, so it is important to follow the package label or your healthcare professional’s instructions.
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How do I use aluminum chloride?
Aluminum chloride products are usually applied to completely dry skin, often at bedtime when sweating is less active. Apply only to the affected area and allow the product to dry before covering the skin with clothing.
Do not apply aluminum chloride to broken, irritated, infected, or recently shaved skin because this can increase stinging and irritation. Some products are used every night at first and then less often once sweating is controlled. Always follow the directions for the specific product you are using.
How does aluminum chloride work?
Aluminum chloride reduces sweating by temporarily blocking the ducts that carry sweat to the surface of the skin. It works best when applied when the sweat glands are less active, which is why many products are used at bedtime.
The effect is temporary, so regular or occasional repeat use may be needed to keep excessive sweating under control.
Who should be careful when using aluminum chloride?
Do not use aluminum chloride if you are allergic to the product or on broken or irritated skin. Avoid contact with the eyes, mouth, and other sensitive areas.
Talk with a healthcare professional before use if you have kidney disease or if you are pregnant or breastfeeding, particularly if you are using a prescription-strength product.
You should also talk with a doctor if excessive sweating starts suddenly, occurs over much of the body, happens mainly at night, or is accompanied by symptoms such as fever, unexplained weight loss, chest pain, or a rapid heartbeat. Excessive sweating can sometimes be caused by another medical condition or medication.
What side effects can occur?
Skin irritation is the most common side effect. You may notice redness, itching, stinging, or burning where the product is applied. Irritation is more likely if aluminum chloride is applied to damp, recently shaved, or irritated skin.
If irritation develops, stop using the product until the skin improves. If symptoms are severe or do not go away, talk with a healthcare professional.
Seek immediate medical attention if you develop signs of a severe allergic reaction, such as swelling of the face, lips, tongue, or throat or difficulty breathing.
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