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Moumoujus

POLYURETHANE-61.

Insufficient Data / NAIL CONDITIONING

POLYURETHANE-61 is a synthetic polymer primarily recognized for its efficacy as a nail conditioning agent. When applied to nails, it improves their overall appearance and health. Although its principal application is in nail care, polyurethanes generally offer potential benefits such as moisturizing, reducing skin roughness, and forming a protective barrier against environmental stressors.

Summary

Nail conditioning Moisturizer Emulsifier Barrier agent Skin conditioning

Science

Mechanism of Action

This synthetic polymer operates primarily by conditioning nail surfaces, enhancing their aesthetic and structural integrity. Broadly, polyurethanes can function as emulsifiers, aiding in the blending of oil and water phases, and as humectants to attract and retain moisture within the skin. They are also known to soften skin texture and create a protective film that shields against external aggressors like sun exposure, cold, and pollution, thereby maintaining skin barrier function.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

There is no available data to suggest that POLYURETHANE-61 is commonly 'dusted' or associated with adverse effects at specific concentration thresholds beyond general safety guidelines.

The Formula

Formulation

Solubility
Water
Optimal pH 7.5 – 9.5
0 7 14

Stability

POLYURETHANE-61 is supplied as an aqueous, low viscosity dispersion, exhibiting optimal stability within a slightly alkaline pH range of 7.5 to 9.5, provided it is used according to specifications without decomposition. Formulators should be aware that 2-Dimethylaminoethanol may be released during the application and subsequent drying processes of the dispersion.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
7.5%
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed polyurethanes, including POLYURETHANE-61, safe for use when formulated to be non-sensitizing. While specific concentration data for POLYURETHANE-61 is limited, it is presumed safe in leave-on products up to 7.5%, based on related polyurethane compounds. A key restriction involves raw material sourcing: polyurethanes may be supplied as emulsions or solutions containing potential sensitizers like methylisothiazolinone (MI); formulators must ensure raw material purity and avoid combinations that lead to high sensitizer concentrations. The CIR Panel confirmed no residual isocyanate or other monomers are expected. It is also noted that POLYURETHANE-61 is not approved for use in food contact adhesives by FDA regulations.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

While POLYURETHANE-61 is primarily a nail conditioning agent and shows potential general benefits as a polymer, there is insufficient specific data regarding its precise efficacy and role in direct skincare applications.

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