Aluminum Diacetate
INCI: ALUMINUM DIACETATE
Reviewed by Daisy · Last updated 14 Aug 2026
A mineral-derived ingredient with purifying and mild astringent properties
Best For Skin Types
Oily, Combination, Acne-prone
Addresses
Usage Frequency
Daily
What Is Aluminum Diacetate?
Aluminium diacetate is a salt compound derived from aluminium and acetic acid. It functions primarily as an antimicrobial and astringent agent in skincare formulations, helping to manage excess oil and support the skin's natural defence against bacteria.
This ingredient has a long history of use in topical products and is valued for its relatively gentle profile compared to some stronger astringents, making it suitable for inclusion in a range of formulations.
How It Works
Aluminium diacetate works through two primary mechanisms. Its antimicrobial properties help suppress bacterial growth on the skin, which can be useful in products aimed at blemish-prone skin. Simultaneously, its astringent action causes mild tightening of the skin by reducing the appearance of pores and helping to absorb surface oils.
Clinical Evidence & References
Research into aluminium compounds, particularly in specialised medical applications such as photodynamic therapy, suggests these materials can interact with biological systems in measurable ways. However, direct clinical evidence specific to aluminium diacetate's efficacy in cosmetic skincare products remains limited in the published literature.
The ingredient's antimicrobial and astringent properties are well-documented in principle, but large-scale studies examining its performance in typical skincare formulations would strengthen the evidence base further.
Published Research
How to Use
Aluminium diacetate is typically incorporated into formulations at low concentrations. Products containing this ingredient should be used as directed on the packaging. If combining with other active ingredients, allow time between applications to assess how your skin responds, particularly if you have sensitive skin.
Safety & Precautions
Frequently Asked Questions
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