Avoid eating foods that have pungent smells if you want to cure sweaty armpits.
These include garlic, fish, spices and onions.
They have their own pungent odors and will cause underarm sweat to smell even worse.
If over-the-counter antiperspirants don't help, a pharmacist can suggest one that contains special properties to decrease underarm sweat.
If this doesn't help, speak to a doctor because you may need a prescribed deodorant, or even medication.
As a last resort, there is a surgical procedure available.
You could try to solve the problem naturally.
An old-fashioned remedy is malt vinegar.
A small amount should be put on both armpits at night before you go to sleep.
Rinse it off in the morning and apply your regular deodorant.
Underarm hairs increase the production of sweat, so shave your armpits regularly.
Aluminum chloride is also said to work well.
This can be purchased from a pharmacy.
Wash your armpits properly before you go to sleep and a make sure they are thoroughly dry.
This is imperative because aluminum chloride can cause irritations if applied to wet skin.
If necessary, use a hair dryer.
You must lie down before applying the solution.
The reason for this is that sweat glands shut down when you are lying down, and the treatment will be more effective.
Apply the aluminum chloride to the armpits.
The solution will secrete into the sweat glands and block them up.
Cover your armpits with cling-wrap when the solution has been applied.
Secure the cling-wrap with some surgical tape or long strips of plaster.
Wear a tight T-shirt while sleeping to keep everything in place.
In the morning, wash the solution off with mild soap and water.
Carry out this treatment every second night - do not do use it every night as it can irritate the skin.
If there is an improvement, you can apply the solution twice a week for a few weeks, and then only once a week.
If you can't cure sweaty armpits with these methods, seek professional advice.