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Moumoujus

POLYURETHANE-53.

Valuable / NAIL CONDITIONING

Polyurethane-53 is a polymer primarily recognized for its film-forming capabilities, creating a protective, water-resistant barrier on the skin. It enhances product texture, imparts a smooth feel, and supports moisture retention, guarding against environmental stressors.

Summary

Film former Binder Surface modifier Plasticizer

Science

Mechanism of Action

On the skin, Polyurethane-53 functions as a film-former, creating a protective and water-resistant layer that improves the overall texture of cosmetic formulations. This barrier aids in moisture retention and shields the skin from environmental factors like sun, cold, and pollution. Additionally, it acts as a binder and surface modifier, contributing to a smooth skin feel. While specifically noted as an artificial nail builder, its general polymeric properties translate to broader dermal benefits.

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

While a specific pH range for Polyurethane-53 is unavailable, the broader class of polyurethanes demonstrates varying pH stability, with some stable between pH 4-9 and others from pH 7-11. Generally, polyurethanes exhibit robust resistance to environmental factors including UV radiation, moisture, and temperature fluctuations, contributing to product longevity.

Conflicts

  • Formulators should exercise caution when combining polyurethane solutions or emulsions that may contain additional sensitizers, such as methylisothiazolinone (MI), to prevent inadvertently exceeding safe concentration levels of these components.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Polyurethane-53, along with other polyurethanes, safe for cosmetic use provided formulations are non-sensitizing and free from residual isocyanates or other monomers known to cause irritation. Although a specific maximum concentration for Polyurethane-53 was not established, other polyurethanes have been safely utilized in leave-on dermal products up to 7.5% and in nail products up to 15%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Polyurethane-53 is a valuable film-forming agent that enhances skin protection and product texture with a low risk of irritation or comedogenicity, making it suitable for a wide range of skincare and cosmetic applications.

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