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| Deodorant Antiperspirants, like deodorants, often contain fragrance to control odour, but unlike deodorants they also contain ingredients to reduce underarm sweating. When we are hot or stressed we automatically produce sweat to lower our body's temperature. We have thousands of sweat glands all over our body to do this job, and only 1% of our body's sweat is produced under the arms (perspiration is more noticeable under the arms because it is more difficult for sweat to evaporate from the armpit). This means that using an antiperspirant reduces sweat patches under the arm without affecting the body's ability to cool itself. Antiperspirants contain ingredients called aluminium salts (or sometimes aluminium/zirconium salts) that dissolve in sweat and leave a thin coating of gel over the sweat glands. This coating reduces the amount of sweat on the skin for a number of hours after the antiperspirant is applied. Deodorants come in many different forms, including roll-ons, sticks, gels, aerosol and non-aerosol sprays. Which type you decide to use is a matter of personal choice.
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