Science
Mechanism of Action
As a cationic surfactant and conditioning agent, Polyquaternium-81 interacts with the skin's surface, establishing a protective, non-occlusive film. This action is critical for enhancing the skin's moisture barrier, leading to a reduction in transepidermal water loss and a palpable improvement in skin softness and smoothness. Its high cationic charge also contributes to the stabilization of complex cosmetic formulations, particularly in the presence of anionic components.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Due to its pronounced cationic charge, Polyquaternium-81 is adept at stabilizing personal care product formulations, especially those containing anionic surfactants, thereby maintaining product integrity.
Safety
Safety Profile
Polyquaternium-81 demonstrates a favorable safety profile, with SkinSAFE classifying it as 'Irritant Free', 'Teen SAFE', and 'Baby SAFE'. The EWG Skin Deep database assigns a 'LOW' hazard rating for general concerns such as cancer, allergies, and developmental toxicity. While broader concerns exist for the quaternary ammonium compound class regarding contact dermatitis, these are not specifically linked to Polyquaternium-81. No specific SCCS opinion or FDA status has been identified for this compound.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyquaternium-81 is a valuable skin conditioning agent, providing effective moisturizing and film-forming benefits to enhance skin texture and hydration, with a low irritancy risk across all skin types.
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