What is considered the active ingredient in a deodorant?

The active ingredient in a deodorant is often classified as an antiseptic. Deodorants are formulated to prevent or eliminate body odor caused by the bacterial breakdown of sweat. Antiseptics are substances that inhibit the growth of bacteria, making them effective in controlling the bacteria that contribute to odor.

While aluminum salts are often found in antiperspirants to reduce sweating, they do not technically serve as a deodorizing mechanism. Perfumes are added for fragrance but do not have any effect on odor prevention. Water is predominantly used as a solvent and does not provide any antibacterial or deodorizing properties. Therefore, the classification of the active ingredient as an antiseptic is accurate, as it directly contributes to the effectiveness of deodorants in managing unwanted odors.