Deodorants prevent the formation of the odor causing bacteria and cover smell. However they only take effect for a very limited space of time, as they do not fight the actual problem, the formation of sweat, at its root. Antiperspirants on the other hand narrow the perspiratory glands and thus prevent the secretion. The active component aluminum chloride is mainly responsible for this cessation of perspiration. But caution is advised. Conventional antiperspirants, available in drugstores or pharmacies contain only a very small amount of aluminum chloride. Often the given concentration is not sufficient to treat sweating.