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Moumoujus

POLYURETHANE-99.

Valuable / FILM FORMING

POLYURETHANE-99 is a synthetic polymer primarily utilized for its film-forming capabilities, creating a continuous, protective layer on the skin. This barrier aids in shielding the skin from environmental stressors and can contribute to enhanced moisture retention, promoting a softer, more elastic complexion.

Summary

Film-forming Skin protectant Moisture retention

Science

Mechanism of Action

This ingredient functions by depositing a continuous, pliable film across the skin's surface. This film acts as a physical barrier, offering protection against external aggressors such as environmental pollutants. Additionally, its occlusive properties help to minimize transepidermal water loss, thereby assisting in maintaining skin hydration, reducing textural roughness, and improving skin's suppleness.

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 exhibit pH-dependent stability; polyester types are more susceptible to hydrolysis (degradation by water or alkaline substances) than polyether variants. High pH environments can induce degradation, although performance against lower concentrations of alkaline substances is generally good. This ingredient can swell in acidic conditions (pH 4.0-6.5) or at pH 7.4. Acidic substances may be incorporated during formulation to manage reactivity and enhance storage stability.

Conflicts

  • strong acids (e.g., sulfuric acid 50%, acetic acid 20%)
  • strong bases (e.g., sodium hydroxide 40%)
  • nitrosating systems (when trialkylamines are present)

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed POLYURETHANE-99, along with 65 other polyurethane ingredients, safe for use at current concentrations and practices, provided they are formulated to be non-sensitizing. The panel concluded that no detectable residual isocyanate or other monomers would be present. Formulators are advised to exercise caution regarding potentially sensitizing constituents, such as methylisothiazolinone (MI), that may be supplied with raw materials, and to avoid combinations that could lead to significant sensitizer concentrations. Regulatory bodies, including the European Union and the U.S. FDA, impose strict safety standards on its cosmetic application.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

POLYURETHANE-99 is a valuable film-forming agent that supports skin protection and moisture retention, considered safe for use when properly formulated.

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