Products with aluminum compounds may actually vary in their effects and effects of irritability. The main active ingredient is polyaluminum chloride or its various forms, which blocks the sweat glands. Differences between brands are often not only related to concentration, but also related to additional ingredients that can increase or reduce skin irritation. If the goal is to reduce discomfort, it’s important to pay attention to the concentration of the solution, the application method (preferably on dry skin, using a small amount), and the frequency of use.