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Moumoujus

NYLON-11.

Valuable CAS 25035-04-5 / BULKING, VISCOSITY CONTROLLING

Nylon-11 is a robust, inert polymer utilized in precision skincare to significantly enhance product texture and application. As an insoluble solid particle, it effectively improves spreadability and contributes to a remarkably smooth finish, without penetrating or interacting with the skin's biological processes.

Summary

bulking viscosity controlling

Science

Mechanism of Action

Nylon-11 primarily functions as a bulking agent, increasing a product's volume and density without altering its intrinsic properties. Concurrently, it acts as a viscosity-controlling agent, allowing for precise adjustment of product consistency. This dual mechanism ensures superior spreadability and an exceptionally even application. Due to its large polymer size, Nylon-11 remains on the skin's surface, exhibiting virtually no potential for skin penetration.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As an insoluble solid particle frequently incorporated into powder formulations, products containing Nylon-11 may exhibit characteristics common to powders. However, the available data does not specifically identify Nylon-11 itself as a primary contributor to or a red flag for dusting issues beyond typical formulation considerations.

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Nylon-11 exhibits excellent thermal stability, with a melting point generally above 190°C (374°F), and strong chemical resistance to oils, greases, fuels, and many other chemicals. However, its resistance to organic acids, mineral salts, and oxidizing agents can vary, and strong acidic conditions can lead to hydrolysis and reduced mechanical integrity. It is incompatible with ozone and most strong acids. Certain organic solvents may cause swelling or partial dissolution. For optimal processing, it requires drying to a maximum moisture content of 0.1%. It is an insoluble solid particle in cosmetic formulations, with very low water absorption (approximately 2.5% at saturation).

Conflicts

  • ozone
  • most strong acids
  • certain organic solvents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
35%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Nylon polymers, including Nylon-11, safe for use in cosmetics, citing their low potential for skin penetration. Products containing Nylon have not been found to be significant dermal irritants or sensitizers. The FDA has approved Nylon-11 for indirect food contact, and it is considered low-risk for biocompatibility with intact skin in medical devices. While a specific maximum concentration for Nylon-11 isn't always provided, similar polymers like Nylon-12 are reported at up to 35% in face powders, which serves as a guiding concentration. Its use in European cosmetics is permitted under the general provisions of the EU Cosmetics Regulation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Nylon-11 is a safe and valuable ingredient for enhancing cosmetic product texture, viscosity, and application quality across all skin types, without impacting skin physiology due to its inert, non-penetrating nature.

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