How to Reduce Underarm Sweat

Underarm sweat is normal for cooling, but persistent or disproportionate sweating can soak clothing, irritate skin, and affect work or social activities. Underarm sweat may improve with correctly used antiperspirant, breathable clothing, and treatment for excessive sweating when symptoms persist or disrupt daily life.

Sweat glands respond to heat, movement, stress, hormones, and some medicines. Primary underarm hyperhidrosis often occurs without another illness; secondary sweating can accompany a medicine effect or a condition that needs assessment. Read more about [Excessive Sweating](/symptoms/excessive-sweating/).

Note when sweating occurs, whether it happens during sleep, which areas are affected, and whether it began after a new medicine. These details help a clinician decide whether testing or treatment is appropriate.

Apply antiperspirant to completely dry underarm skin, often in the evening, and follow the product directions. Wear loose breathable layers, change damp clothing, and use absorbent underarm pads if helpful. Avoid applying irritating products immediately after shaving and protect inflamed skin from friction.

If symptoms continue, options include [Prescription Antiperspirant](/treatments/medical-dermatology/prescription-antiperspirant/), [Botox For Sweating](/treatments/injectables/botulinum-toxin-for-hyperhidrosis/), or [Microwave Sweat Gland Treatment](/treatments/laser-and-energy/microwave-sweat-gland-treatment/). A clinician can explain expected duration, side effects, and suitability for your pattern of sweating.

Arrange a medical review if sweating suddenly changes, occurs mainly at night, affects the whole body, or comes with fever, weight change, palpitations, dizziness, or a new medicine. Seek prompt care for chest pain, fainting, severe breathlessness, or confusion.

Ask whether the pattern suggests primary or secondary sweating, how to use antiperspirant without irritating your skin, which procedure fits your goals, and what symptoms should prompt a review.