Best For Skin Types
Oily, Combination
Addresses
Usage Frequency
Daily
What Is Aluminum Chlorohydrex?
Aluminum chlorohydrex is an inorganic salt derived from aluminium. It functions as an antiperspirant and astringent, working to reduce the production or secretion of sweat and oil on the skin's surface.
In skincare formulations, it is primarily used to address excessive moisture, making it a common ingredient in products designed for oily or perspiration-prone skin. It differs from deodorants in that it actively inhibits sweat production rather than simply masking odour.
How It Works
Aluminum chlorohydrex works by forming a plug-like substance within the sweat duct, which temporarily reduces the flow of perspiration to the skin's surface. This mechanism makes it effective as an antiperspirant component.
As an astringent, it can also cause minor contraction of skin tissue, which some find creates a smoother, more refined appearance. The exact degree of efficacy varies depending on formulation strength and individual skin physiology.
Clinical Evidence & References
Aluminum chlorohydrex has a long history of safe use in antiperspirant products. Research supports its effectiveness in reducing perspiration when used in appropriate concentrations, though clinical studies specifically examining its use in skincare products (rather than cosmetic antiperspirants) are limited.
The ingredient has been extensively reviewed for safety by regulatory bodies. While concerns about aluminium absorption have been raised periodically, current evidence suggests that topical use in cosmetic formulations poses minimal risk to the general population, though individuals with certain health conditions may wish to exercise caution.
How to Use
Aluminum chlorohydrex is typically found in products designed for daily use on oily or combination skin. Apply to clean skin as directed by the product instructions, usually once or twice daily. Allow products to dry fully before applying other skincare or makeup. If using multiple products containing astringent ingredients, monitor your skin for signs of over-drying and adjust frequency as needed.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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Aluminum Acetate Solution
A mild astringent solution traditionally used to reduce excess moisture and support skin comfort
Aluminum Chloride
A perspiration suppressant that reduces excess sweat production and moisture on skin
Aluminum Chlorohydrate
An aluminium salt that reduces sweat production by blocking eccrine gland secretion
Aluminum Glycinate
An aluminium salt that helps regulate moisture and maintain skin pH balance
Aluminum PCA
A lightweight astringent that helps refine skin texture and minimise excess oil
Aluminum Sesquichlorohydrate
An aluminium salt used as an antiperspirant active
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