Nylon-11

What is Nylon-11?

Nylon-11 is a synthetic polyamide polymer synthesized from 11-aminoundecanoic acid, obtained through the chemical processing of castor oil, a renewable plant source. This results in a lightweight, white micronized powder with spherical particles. Primarily used in color cosmetics like foundations, powders, and eyeshadows, as well as skincare creams and lotions, it serves multiple technical roles. In formulations, it increases bulk to enhance product volume and handling, scatters light to reduce transparency for an even, creamy appearance, and adjusts flow properties to prevent separation while improving spreadability. Its oil-absorbing capacity helps create a matte finish, and the smooth particle shape contributes to a silky, non-drying sensory experience without penetrating the skin.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Bulking agent
Increases mass/volume to build structure and improve handling, commonly used to adjust feel, spread, and cost-in-use without acting as a primary active.
Opacifying agent
Makes a formula less transparent to create a creamy, opaque look; can also help visually mask suspended particles and improve aesthetic uniformity.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Improves texture by adding volume and enabling smoother application.

Creates opacity to mask imperfections and unify product appearance.

Stabilizes viscosity for consistent dispensing and long-term formula integrity.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People using makeup products for better blendability and matte effects.
Those with known allergies to polyamides, though rare.
Individuals preferring stable creams with even coverage.
People avoiding synthetic-derived ingredients regardless of safety data.
Users seeking lightweight powders that enhance skin feel.
Individuals sensitive to castor oil derivatives, despite processing.

Safety Notes

  • Rated low hazard by independent safety assessments.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Nylon-11

What is the origin of Nylon-11?

It is a polyamide made from castor oil through chemical processing into a fine powder.

Is Nylon-11 safe for daily use?

Yes, it has a low safety risk profile from regulatory and expert evaluations.

Does Nylon-11 cause breakouts?

No, it has a zero comedogenic rating and does not promote pore clogging.