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Bathing daily can keep the bacteria that live on your skin in check. These bacteria cause body odor related to excessive sweating, so reducing their number can help you avoid smelling sweaty.  Washing with soap after a workout or other rigorous activities is especially important. Washing away sweat and bacteria after exercising can also help control acne.  While bathing daily is good, try to keep showers short. Long, hot showers can dry out your skin and cause acne or irritation. You can find astringent skin care products that contain tannic acid at pharmacies and wherever hygiene products are sold. Apply a thin layer to the areas of your body that sweat excessively, such as your underarms or feet. Read your product's instructions, and use it as directed.  You could also try brewing strong black tea, which contains tannic acid. Soak a washcloth in the tea or apply the tea bags directly to your skin. Clinical strength antiperspirants can cause irritation or worsen eczema and atopic dermatitis, but tannic acid can help minimize these effects. Chili peppers, hot sauce, and other spicy items can cause sweating, so try to avoid them. If you notice that you start sweating when you eat spicy food, steer clear of them, especially when you’re out and about. Additionally, onions and garlic can make your sweat smell unpleasant. Take note if you tend to sweat more when you drink caffeinated coffee or tea, or when you drink alcohol. If necessary, avoid these substances, especially when you’re out in public. Keep in mind caffeine is also found in chocolate, so you might need to cut back on sweet treats, too. When you feel overwhelmed or stressed out, breathe in deeply as you count to 4, hold for a 4 count, then exhale slowly for an 8 count. As you control your breathing, imagine you're in a comfortable setting, like a soothing place from your childhood. Try doing relaxation techniques before and during stressful situations, like public speaking or going to the dentist. Try keeping a sweat journal to track what causes you to sweat. You could keep a small pad on hand or keep a log on your phone.  For instance, if you added hot sauce to your lunch and started sweating excessively, make a note. Write down if you start sweating after drinking a glass of wine, or if talking to your crush sends your sweat glands into overdrive. Tracking specific triggers will help you know what to avoid in order to prevent excessive sweating.
Bathe daily and develop healthy hygiene habits. Apply products that contain tannic acid to the affected areas. Skip spicy foods. Cut down on caffeinated and alcoholic beverages. Try relaxation techniques if stress causes you to sweat. Keep track of what triggers your sweating.