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Moumoujus

POLYURETHANE-12.

Valuable CAS - / BINDING, FILM FORMING

POLYURETHANE-12 is a synthetic polymer engineered to perform as both a film former and a binder in cosmetic formulations. It creates a breathable, protective layer on the skin, augmenting product water resistance and extending active ingredient efficacy. This film simultaneously refines skin texture, imparting a smooth, luxurious feel, while contributing to epidermal moisture retention and shielding against external environmental stressors.

Summary

Film Forming Binding Skin Protectant Moisture Retention Texture Enhancer Water Resistance Enhancer

Science

Mechanism of Action

Functioning as a molecular scaffolding, POLYURETHANE-12 establishes a resilient, non-occlusive polymeric film upon topical application. This film enhances the structural integrity of cosmetic products by binding components and significantly improving their resistance to water. By forming this barrier, it effectively prolongs the bioavailability and protective action of active ingredients. Furthermore, the film visibly improves skin texture, lending a soft and silky finish, while aiding in maintaining optimal hydration levels and offering a physical defense against environmental factors such as UV exposure, cold, and pollutants.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Polyurethanes generally exhibit robust stability across a broad pH range, exemplified by Polyurethane-39's stability from pH 2 to 12. However, the integrity of polyurethane coatings can be compromised under highly acidic conditions (approximately pH 1-3) due to the hydrolysis of amide groups. While polyether polyurethanes demonstrate superior resistance to alkaline degradation, polyester-based variants are notably more susceptible to acidic hydrolysis.

Conflicts

  • Strong acids (e.g., Sulfuric Acid, Hydrochloric Acid, Hydrofluoric Acid)
  • Strong bases (e.g., Sodium Hydroxide)
  • Certain ketones (e.g., Acetone, Cyclohexanone, Methyl Ethyl Ketone)
  • Some amines (e.g., Diethylformamide)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
7.5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has rigorously evaluated POLYURETHANE-12, alongside 65 other polyurethane derivatives, affirming their safety for cosmetic use within established concentrations and application methods. This determination is predicated on the absence of detectable residual isocyanate or other monomers, and meticulous formulation to ensure non-sensitizing properties. Notably, a related compound, Polyurethane-33, has a reported maximum concentration of 7.5% in leave-on dermal products, serving as a guideline for this ingredient class.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

A valuable polymeric film-former, POLYURETHANE-12 enhances cosmetic product performance, improves skin aesthetics, and provides environmental protection, all within a well-established safety framework.

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References

Sources