When selecting deodorants, the ingredients used must be considered. Common components in deodorants include antibacterial agents such as triclosan and natural substitutes such as tea tree oil. Antisweat agents contain aluminum compounds that reduce sweat production by blocking sweat glands. People with sensitive skin can choose aluminum free or natural deodorants.

Body deodorants mainly eliminate body odor by inhibiting bacterial growth, neutralizing odor molecules, and forming protective barriers. Some products contain antibacterial ingredients that can reduce the growth of bacteria on the skin surface, thereby reducing body odor problems. Meanwhile, the neutralizing agent in deodorants can bind with odor molecules, causing them to lose their odor. In addition, body deodorants can also form a protective film on the surface of the skin to prevent the recurrence of odor molecules.