Use an antiperspirant, not just deodorant
Apply antiperspirant at night before bed
Reapply in the morning if needed
Keep underarms clean and dry
Wear loose, breathable fabrics
Choose moisture-wicking clothing
Avoid tight sleeves and heavy layers
Limit spicy foods, caffeine, and alcohol
Stay hydrated
Manage stress and anxiety
Shave or trim underarm hair
Use sweat pads or underarm shields
Carry a spare shirt
Try clinical-strength antiperspirants
Consider prescription treatments
Ask a doctor about iontophoresis, Botox, or other medical options