Perspiration really is odorless, it’s the bacteria that causes the terrible odor. Lemon juice is excellent at killing germs. Plus, lemon juice is excellent at lightening skin, in order to use it to lighten your armpits. Combine with honey and oatmeal and apply onto your armpits, use it as a scrub or leave it on as a mask for up to an hour, then wash off. You’ll see the skin in your armpits will become lighter and more even if you use this technique often.