Science
Mechanism of Action
As a polyethylenimine, PEI-700 employs its abundant polar amine groups to facilitate robust interactions within a formulation and with the skin. Its high cationic charge density in aqueous solutions allows it to neutralize and adsorb anionic substances. On the skin, these properties enable adsorption and potential penetration effects, contributing to improved moisture retention and a smoother tactile feel by forming hydrogen, ionic, and covalent bonds with various organic molecules.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEI-700, a polyethylenimine, contains highly reactive primary and secondary amine groups, which can engage in reactions with compounds like epoxides, aldehydes, isocyanates, and acidic gases. This reactivity necessitates careful consideration for overall product stability and ingredient compatibility. Maintaining the product's pH within an optimal range is crucial to preserve the integrity of PEI-700 and the entire formulation.
Safety
Safety Profile
PEI-700 is identified by EWG Skin Deep with low to moderate non-reproductive organ system toxicity and low ecotoxicity. Environment Canada classifies it as 'expected to be toxic or harmful' but 'not suspected to be bioaccumulative.' It is not listed on EWG's Restricted or Unacceptable Lists, and INCI Beauty reports 'No penalty' across its safety categories. Specific comprehensive safety assessments by regulatory bodies such as CIR or SCCS for cosmetic applications are not currently available.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEI-700 is an optional ingredient primarily valued for its precise viscosity control in formulations, offering potential secondary benefits for skin moisture and smoothness, though further dedicated cosmetic-specific clinical and safety data would enhance its profile.
Related
Similar Ingredients
Finding similar ingredients…