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Moumoujus

POLYUREA CROSSPOLYMER-1.

Valuable / ABSORBENT

POLYUREA CROSSPOLYMER-1 is a functional polymer engineered to improve skin texture and feel by forming a delicate, protective film on the surface. It concurrently acts as an absorbent, contributing to a refined and smooth skin finish.

Summary

Film-forming Absorbent

Science

Mechanism of Action

This ingredient functions by depositing a fine, flexible film on the skin's surface, which visually and tactilely enhances smoothness. Beyond its film-forming capabilities, it also exhibits absorbent properties, aiding in the management of surface oils or moisture to promote an optimized skin appearance.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Polyurea polymers typically demonstrate thermal stability across various temperature conditions. While specific pH stability for POLYUREA CROSSPOLYMER-1 is not detailed, a related polymer, Polyurethane-14, is stable and resists significant hydrolysis within a pH range of 4 to 9, primarily partitioning into the organic phase.

Conflicts

  • Residual diisocyanate monomers (though not expected in cosmetic-grade polyurethanes as per CIR assessment)
  • Sensitizers like methylisothiazolinone (MI), particularly if present in the supplied solution or emulsion of the polymer, necessitating careful formulation to avoid elevated concentrations.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has determined that polyurethanes, which encompass polyurea crosspolymers, are safe for use under current practices and concentrations. This assessment is contingent upon their formulation being non-sensitizing, with the panel concluding that residual isocyanate or other monomers are not expected. Formulators are advised to carefully manage mixtures that may contain sensitizers, such as methylisothiazolinone (MI), to prevent significant cumulative concentrations. This ingredient is not subject to pre-market FDA approval and is not listed on the FDA's prohibited or restricted cosmetic ingredients list.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

POLYUREA CROSSPOLYMER-1 is a valuable film-forming and absorbent agent, enhancing skin texture and finish, with a generally low sensitization risk when properly formulated.

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