What prevents sweating?

Answer 1

Death.

People perspire all the time, unless maybe in winter when it's cold.

You are likely talking about excess perspiration, when the skin produces more sweat that it needs at the moment to cool the body.

Or maybe you mean the kind of nervous sweating that occurs when you're in a state of anxiety.

Take off some layers of clothing, or wear lighter clothes if you are perspiring from the heat. If you are perspiring from nervousness, think about taking lessons or reading how to do progressive relaxation.

Hyperhidrosis?

For individuals suffering from hyperhidrosis (excessive sweating), a commonly used remedy is the anti-perspirant. These anti-perspirants often contain an aluminum based chemical formulation such as aluminum chloride that can help block the overactive underarm sweat glands, preventing sweat from surfacing out. Some popular brands that has been reported to be able to control light to mild underarm sweating include Drysol, Maxim and Certain Dri. Many people, especially women and young teenagers, aren't able to use these products because they will cause dermal irritations, such as itching, stinging and inflammatory skin. Since this is a common problem plus many people are suffering from Allergies nowadays, dermatologists tend to recommend "gentle antiperspirants" (for example AHC20 sensitive) which are enriched with natural plant extracts. Herbs and plants like Sage, Clove or Usnea barbata help to reduce irritations of the skin to a minimum.

On the other hand, if you are suffering from excessive sweating that cannot be controlled by antiperspirants, a doctor would recommend oral medications, iontophoresis, Botox® injections or surgery as the next best treatment solutions to help you stop the heavy sweating.