Science
Mechanism of Action
It acts by interacting with bicarbonate-buffered sweat and ductal mucins, forming temporary, insoluble gel-like plugs of polymeric aluminum hydroxide within sweat ducts. This physical occlusion reduces perspiration and concurrently tightens skin tissue.
Research
Clinical Evidence
High confidence25%
Key findings
- 01 A clinical pharmacokinetic study using 26Al microtracer demonstrated extremely low percutaneous absorption (approx. 0.00052% to 0.0094%) on healthy skin, confirming minimal systemic exposure from topical application at concentrations up to 25% (as Aluminum Chlorohydrate).
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal stability is observed between pH 6.0 and 7.0. Below pH 5.0, it is less stable and may necessitate a mineral acid to prevent cloudiness or thickening.
Synergies
- Functions as a crosslinker for certain polymers
Conflicts
- Bicarbonates (causes precipitation)
- Strong bases (causes gelation)
- Certain anionic polymers
Safety
Safety Profile
Considered safe in current cosmetic practices by CIR, FDA, and SCCS, with systemic exposure from topical use not significantly adding to the body's aluminum burden.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Aluminum Citrate is a valuable ingredient for formulations targeting perspiration and skin tightening, offering proven efficacy with a low systemic exposure risk and favorable skin compatibility.
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