Beheneth-25 Methacrylate Crosspolymer is an associative polymeric thickener and rheology modifier used to control viscosity and stabilize emulsions in skincare and cosmetic formulations. It functions as a formulation aid rather than a skin-treatment active.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation | Rare | Occasional transient irritation, typically related to overall formulation rather than the polymer itself. |
| Contact allergy / sensitization | Very rare | Sensitization to this high-molecular-weight polymer is uncommon; reactions are infrequently reported. |
| Eye irritation | Rare | May cause mild stinging if products migrate into the eyes. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.