Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

POLYURETHANE-91.

Insufficient Data / FILM FORMING

POLYURETHANE-91 currently lacks specific scientific data regarding its application and performance as a cosmetic ingredient, with existing references primarily associating it with industrial sealant uses. While polyurethanes broadly act as film-forming agents to refine skin texture and provide environmental defense, and can also function as emulsifiers, the direct benefits and efficacy of this specific variant in skincare remain unestablished.

Summary

Film-forming agent Emulsifying agent

Science

Mechanism of Action

The precise mechanism of action for POLYURETHANE-91 within a cosmetic context has not been explicitly determined. However, polyurethanes generally utilized in skincare are known for their film-forming properties, which can help mitigate skin roughness, enhance dermal softness, and establish a protective barrier against environmental aggressors like solar radiation, cold temperatures, or pollution. Additionally, certain polyurethane compounds may serve as emulsifiers, facilitating the stable mixture of disparate oil and water phases in formulations.

Research

Clinical Evidence

Insufficient-data 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

Specific optimal pH ranges for stability and other formulation stability data for POLYURETHANE-91 as a cosmetic ingredient are presently unavailable. It is important to note that stability and pH tolerance can vary significantly among different polyurethane compounds. For example, Polyurethane-21 demonstrates stability between pH 7 and 11, Polyurethane-35 is stable in the pH range of 4.5 to 7.0, and Polyurethane-39 is effective across a broader pH spectrum from 2 to 12.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

POLYURETHANE-91 has not undergone specific review by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR has, however, evaluated other polyurethane ingredients (e.g., Polyurethane-1, -14, -21, -35, -36, -60, -61, -62), noting that the presence of residual diisocyanate monomers is a critical consideration for safety, as these can be linked to irritant and allergic contact dermatitis. An industrial Safety Data Sheet for a product labeled 'BOSTIK PU91 POLYURETHANE' indicates it 'Contains isocyanates. May produce an allergic reaction,' raising a potential concern if this specific chemical composition, particularly with residual monomers, were to be used in cosmetic applications. However, it is essential to distinguish this industrial product from cosmetic-grade ingredients. The general use of polyurethanes in cosmetics is subject to strict safety regulations by authorities such as the EU and FDA.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

With no specific cosmetic efficacy or safety data available, and its primary identification as an industrial material, POLYURETHANE-91's suitability for precision skincare formulations is currently unestablished.

Related

Similar Ingredients

Finding similar ingredients…