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Moumoujus

POLYURETHANE-62.

Valuable / BINDING, VISCOSITY CONTROLLING

POLYURETHANE-62 is a highly versatile polymer utilized in precision skincare for its multi-functional capabilities. It primarily acts as a binding agent, viscosity modifier, and film former, significantly enhancing product stability, texture, and water resistance in formulations.

Summary

Binding Viscosity Controlling Film-forming Emulsifying Pigment Dispersing Co-thickening Water resistance

Science

Mechanism of Action

This ingredient functions by improving the structural integrity of cosmetic products, binding powdered elements, and controlling the overall viscosity of the formulation. It also creates a protective film on the skin, emulsifies ingredients, effectively disperses pigments, and co-thickens formulas, notably contributing to water-resistant properties.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 9
0 7 14

Stability

POLYURETHANE-62 demonstrates robust stability under typical environmental conditions and is not expected to degrade within cosmetic formulations at concentrations of 5%-15%. It maintains integrity across a pH range of 4-9, showing high compatibility with metal oxides like titanium dioxide and zinc oxide. This polymer also provides pH and electrolyte tolerant thickening. Formulators must be cautious of potential sensitizers, such as methylisothiazolinone (MI), if the raw material is supplied in a solution containing these agents, to avoid reaching significant concentrations.

Synergies

  • Metal oxides (e.g., titanium dioxide, zinc oxide)

Conflicts

  • High concentrations of sensitizers (e.g., methylisothiazolinone) when combining solutions containing these raw materials

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that polyurethanes, including POLYURETHANE-62, are safe in cosmetic practices of use and concentration, provided they are formulated to be non-sensitizing. The panel confirmed the absence of detectable residual isocyanate or other monomers in these ingredients. Specifically, POLYURETHANE-62 contains no detectable unreacted isocyanate (HDI), and cured polyurethane is generally considered safe for skin contact due to its inert nature. While no explicit maximum safe use concentration for POLYURETHANE-62 was provided, a related polyurethane (Polyurethane-33) has been reported safe for leave-on dermal products up to 7.5%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

POLYURETHANE-62 is a valuable formulation excipient, enhancing product stability, texture, and water resistance with a favorable safety profile.

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