Sweat is a natural secretion from under the skin. It’s a good thing, really, to sweat out toxins and other impurities from our bodies. But excessive sweating can be annoying—especially when you suffer from hyperhidrosis (excessive sweaty palms). If you’ve tried every deodorant on Earth for this condition, here are things you can do to cure your armpits so they don’t smell like sour milk anymore: Try soaking in cold water with baking soda or Epsom salts. Use tea tree oil applied directly onto the problem areas at night. A few drops of lavender essential oil mixed into shampoo will work wonders as well!