Science
Mechanism of Action
Upon introduction to an aqueous system, the molecule dissociates into diethanolammonium cations and bisulfate anions. These ions act as chemical anchors that neutralize acidity and resist pH fluctuations, ensuring the formulation remains within the optimal physiological window for skin application.
Research
Clinical Evidence
High confidence2.5%
Key findings
- 01 Ocular assessments using MTT assays and Draize protocols demonstrate that a 10% concentration is classified as a non-to-minimal irritant.
- 02 Dermal penetration research indicates approximately 30% skin accumulation over a 72-hour period when applied in concentrated (37%) formats, highlighting the importance of regulated dosage.
Transparency
Dusting Analysis
As a functional stabilizer rather than an active treatment, 'dusting' is less relevant here; however, concentrations below 0.1% may fail to provide adequate pH buffering for complex formulas.
The Formula
Formulation
Stability
Highly hygroscopic and stable in water-based environments. It is most effective when stabilizing formulations near its pKa of 8.88.
Synergies
- Water-soluble surfactants
- Chelating agents
Conflicts
- N-nitrosating agents (e.g., Sodium Nitrite)
- Strong oxidizing agents
- Formaldehyde donors
Safety
Safety Profile
Must not be used in the presence of nitrosating agents to prevent the formation of carcinogenic nitrosamines. Total ethanolamine content must remain below 5% for leave-on products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A robust and reliable pH stabilizer for aqueous formulas, though it requires strict avoidance of nitrosating contaminants.
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References
Sources