ALUMINUM TRIFORMATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An aluminum coordination complex with formic acid — acts as a buffering agent that helps stabilize cosmetic formulations while delivering aluminum exposure, which some prefer to minimize in skincare.
Aluminum triformate (Al(CHO2)3) is a coordination complex where aluminum(III) is bound by three formate anions in a chelate configuration. The aluminum center exists in octahedral coordination geometry, with the formate ligands providing both electrostatic and coordinate covalent bonding. As a buffering agent, it can resist changes in pH when acid or base is added to a formulation. Aluminum salts have astringent properties — they precipitate proteins and can temporarily tighten skin. The formate ligand can be metabolized to formic acid and eventually to carbon dioxide and water in biological systems. Aluminum exposure from cosmetics is a subject of ongoing research and consumer preference, particularly for products used on compromised skin or applied frequently.
Function
Skin benefits
- Buffering helps maintain formulation pH stability
- Astringent tightening effect may temporarily reduce appearance of pores
- Can help control excess oil on skin surface
Known concerns
- Aluminum exposure — of interest due to studies suggesting potential neurotoxicity and links to breast cancer research, though causal connections in topical cosmetic use are not established
- May be a skin irritant for individuals with aluminum sensitivity
- Astringent effect may be too drying for sensitive or dry skin types
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.