Science
Mechanism of Action
As a polycationic polymer, PEI-1750 functions primarily by interacting electrostatically with negatively charged components within a formulation or on surfaces. In cosmetic applications, this property is leveraged for its ability to increase or decrease product viscosity. While primarily a textural modifier, its cationic nature can also provide film-forming and anti-static effects, particularly noted in hair care, by binding to hair's negatively charged surface. Direct mechanisms of action providing skincare benefits are not extensively detailed.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
No specific data regarding dusting or common dusting percentages for PEI-1750 were identified in the research.
The Formula
Formulation
Stability
PEI-1750 is soluble in hot water and at low pH but insoluble in cold water. It also dissolves in ethanol, methanol, and chloroform. It is chemically stable at standard room temperatures and exhibits good stability in highly saline solutions. An aqueous solution at 50g/L typically presents a pH between 10 and 12 at 25℃.
Conflicts
- Strong oxidizing agents
- Strong reducing agents
- Sulfuric acid (causes precipitation below pH 2.4)
- Formaldehyde (induces condensation/coagulation)
Safety
Safety Profile
Polyethylenimine is considered moderately to highly toxic, with toxicity varying based on molecular weight and branching; lower molecular weight forms tend to be more cytotoxic. Prolonged or repeated exposure can result in skin and eye irritation, respiratory distress, and potential internal organ damage. It may cause sensitization through skin contact and is generally irritating to skin and eyes. While certain forms have limited evidence suggesting carcinogenic potential, PEI-1750 is not classified as a confirmed carcinogen by IARC or EPA. FDA approval for specific biomedical uses (e.g., gene delivery) does not imply general topical cosmetic safety.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its function as a viscosity controller, PEI-1750 presents significant safety concerns including moderate to high toxicity, potential skin and eye irritation, sensitization risk, and an unreviewed CIR status, making it unsuitable for precision skincare applications.
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