Science
Mechanism of Action
As a cationic polymer, Polyquaternium-37 possesses a positive charge that strongly adheres to the negatively charged surface of the skin. This interaction forms a delicate, substantive film that effectively minimizes transepidermal water loss (TEWL), thereby locking in hydration and promoting prolonged moisture retention. The resulting effect is a noticeably smoother and softer skin feel.
Research
Clinical Evidence
Medium confidence0.2%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient exhibits robust stability across a broad pH spectrum and is effective in stabilizing complex oil/water emulsions, even without the inclusion of additional emulsifiers. It is frequently supplied as an inverse dispersion that is cold-processable and activates upon dilution.
Safety
Safety Profile
Independent expert panels affirm Polyquaternium-37's safety in cosmetic applications, specifically when formulated to be non-irritating within typical active polymer concentrations of 0.2-2%. While classified as a low hazard ingredient, there are considerations regarding potential accumulation from repeated use, and some individuals may experience sensitivities.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyquaternium-37 is a valuable polymer for skincare, offering effective moisture retention, skin conditioning, and superior textural enhancement in formulations.
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