Some examples of good home remedies for underarm sweat include apple cider vinegar, baking soda, coconut oil, lemon and magnesium-rich foods, according to Rapid Home Remedies. All of these ingredients are readily available at grocery stores.
Excessive sweating of the armpits can be alleviated by rubbing a small amount of apple cider vinegar on the armpits at night and wash it off in the morning, explains Rapid Home Remedies. Baking soda is a common ingredient of homemade deodorants and works by lowering the pH of sweaty parts of the body. Coconut oil is known to eliminate the bacterial of the underarm that cause sweat with a bad odor. Lemon can also be applied to underarms as a home remedy to sweating. Magnesium deficiency can sometimes lead to excessive sweating, so a diet rich in magnesium can reduce perspiration. Examples of magnesium-rich foods include green leafy vegetables, potatoes and whole grains.