Science
Mechanism of Action
This ingredient acts as a hexadentate ligand, binding with divalent and trivalent metal ions such as calcium, magnesium, and iron to form stable, water-soluble complexes. By 'locking away' these ions, it prevents them from catalyzing oxidation reactions. Additionally, it can temporarily modulate the skin's calcium-dependent barrier functions to facilitate the transdermal delivery of other active molecules.
Research
Clinical Evidence
High confidence0.2%
Key findings
- 01 Human patch testing across 50 subjects identified the ingredient as a weak sensitizer with negligible irritation potential at standard formulation levels (CIR, 2002).
- 02 Pharmacokinetic evaluations confirmed zero systemic absorption through human skin when applied at concentrations below 2%, ensuring localized action (PubMed).
- 03 Research indicates that concentrations reaching 11% can disrupt barrier-localized calcium ions, serving as a potent penetration enhancer (CIR, 2019).
Transparency
Dusting Analysis
As a functional stabilizer rather than a primary active, this ingredient is rarely 'dusted' for marketing claims; it is included at precise, low levels (typically 0.1% to 0.5%) strictly for formula performance.
The Formula
Formulation
Stability
Highly resilient under ambient conditions; however, it is ideally stored in polyethylene containers to prevent the leaching of metal ions from glass packaging.
Synergies
- Broad-spectrum preservatives
- Antioxidants
- Penetration-dependent actives
Conflicts
- Strong oxidizing agents
- Zinc salts
- Folic acid
- High-load Polyquaternium compounds
Safety
Safety Profile
FDA-approved as a safe food additive; the CIR Expert Panel confirms its safety in cosmetics up to a 2% threshold.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential stabilization tool that ensures formula longevity and enhances the delivery of active ingredients without compromising skin safety.
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References
Sources