Science
Mechanism of Action
TEA-Sorbate exerts its antimicrobial action primarily through its sorbic acid component. This active moiety interferes with essential microbial metabolic processes, including nutrient transport and energy synthesis, and effectively disrupts the structural integrity of microbial cell membranes, preventing the proliferation of bacteria, molds, and yeasts.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 The European Commission permits TEA-Sorbate as a preservative in cosmetics at a maximum concentration of 0.6% (as the acid), establishing its effectiveness and safety profile.
- 02 The Cosmetic Ingredient Review (CIR) Expert Panel has assessed the safety of related sorbates and TEA-containing ingredients, including TEA-Sorbate, affirming their suitability for use in personal care products.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
For optimal efficacy, sorbates, including TEA-Sorbate, are most active within slightly acidic environments, with peak effectiveness observed between pH 3.0 and 5.5, while maintaining partial activity up to pH 6.5. To facilitate optimal dissolution and antimicrobial action, it is advisable to incorporate sorbate early in the formulation process and subsequently adjust the product pH to below 4.6.
Conflicts
- High concentrations of potassium sorbate, a related compound, or its combination with nitrites may exhibit in vitro genotoxic activity.
- Formulation with ingredients containing primary or secondary amino groups (e.g., amidopropylbetaines, protein hydrolyzates, ethanolamides, and their fatty acid esters) can lead to undesirable reactions such as discoloration, particularly upon light exposure.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that sorbic acid and potassium sorbate are safe for use in cosmetics, with TEA-Sorbate being part of the 'TEA-containing ingredients' reviewed. The European Commission sanctions its use as a preservative up to 0.6% (as the acid). Related sorbates are also recognized as Generally Recognized As Safe (GRAS) by the FDA for food applications, underscoring a strong safety profile.
Your Skin
Skin Compatibility
Our Assessment
Verdict
TEA-Sorbate is an essential ingredient for maintaining product integrity and safety across all skin types, effectively preserving formulations against microbial contamination within precisely defined concentration limits.
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