What should you know about lithium aluminium chloride?

Aluminium chloride is a topical antiperspirant salt used to reduce sweat reaching the skin surface. The word lithium may reflect a mix-up, a product name, or a different chemical reference; it should not be assumed to describe a standard antiperspirant. The exact label and concentration matter when deciding how a product should be used.

These products are commonly considered for localised excessive sweating, such as damp underarms, hands or feet. They work at the sweat duct near the skin rather than changing the body's overall ability to sweat. Read more about [Aluminium Chloride](/materials/aluminium-chloride/) and [Prescription Antiperspirant](/treatments/medical-dermatology/prescription-antiperspirant/).

Confirm the ingredient before applying anything, especially if the packaging says lithium aluminium chloride. Use the product only on intact, completely dry skin and follow the supplied directions. Applying soon after shaving, bathing or exercise can make stinging and irritation more likely.

If irritation develops, pause and seek advice about a gentler schedule or another option. Do not apply to cuts, eczema patches or infected skin. A clinician can assess whether sweating is primary or linked to a medicine or another health issue, then select an appropriate treatment.

Obtain prompt advice for facial swelling, blistering, intense burning, widespread hives, breathing trouble or a rapidly worsening reaction. Arrange a medical review for sudden heavy sweating, night sweats, faintness, chest symptoms or sweating with weight change, because the pattern may need assessment beyond skin treatment.

Ask what the ingredient on your label is, where it is safe to apply, how often to use it, what to do about irritation, and whether another cause of sweating should be checked.