Science
Mechanism of Action
This ingredient functions primarily as a surfactant by reducing the surface tension between water and hydrophobic substances like oils and dirt, allowing them to be emulsified and easily rinsed away. Its large molecular size and negative charge significantly limit skin penetration. Additionally, it can mitigate the potentially irritating effects of other anionic surfactants, such as Sodium Laureth Sulfate, thereby improving formula mildness.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Clinical studies demonstrate non-irritating properties at concentrations of 1.2% in rabbit skin irritation tests and 1.68% in human repeated insult patch tests.
- 02 While a related compound was classified as a mild skin irritant at 10% in a citrate buffer solution, other human studies showed no induction of skin irritation at 5% and 10% concentrations in both healthy individuals and patients with dermatitis.
- 03 Recommended dosage for cosmetic applications typically ranges from 0.5% to 5%.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As an ester, Disodium Coceth-3 Sulfosuccinate is prone to hydrolysis in highly acidic or alkaline media. It is sensitive to high temperatures, making it unsuitable for prolonged storage or processing at elevated temperatures. Minor cloudiness or crystallization may manifest upon storage, but this is a reversible phenomenon and does not compromise product quality.
Synergies
- Improves the skin compatibility and reduces the irritating potential of other anionic surfactants, such as Sodium Laureth Sulfate.
Conflicts
- Hydrolysis in pH environments outside the optimal range of 5.0-7.5.
- Degradation or instability at high temperatures.
Safety
Safety Profile
The CIR Expert Panel concluded that Alkyl PEG Sulfosuccinates, including Disodium Coceth-3 Sulfosuccinate, are safe when formulated to be non-irritating. For products intended for prolonged skin contact, concentrations under 1% are generally considered safe. Formulations must be precisely calibrated to avoid potential ocular or skin irritation. Trace impurities such as 1,4-dioxane, ethylene oxide, and formaldehyde can be present but are controlled through rigorous purification processes. It is not identified as a sensitizer.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Disodium Coceth-3 Sulfosuccinate is a valuable, mild surfactant choice, especially in gentle cleansing formulations, offering effective purification with low irritancy potential and beneficial skin compatibility enhancement.
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