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BIS-DIOCTADECYLAMIDE DIMER DILINOLEIC ACID/ETHYLENEDIAMINE COPOLYMER.

Valuable CAS - / BINDING, VISCOSITY CONTROLLING

A high-performance oil-gelling polyamide that transforms liquid lipids into stable, high-clarity structures. It serves as a sophisticated film-former, providing a breathable yet water-resistant barrier that enhances the wear-time and hydration of topical formulas.

Viscosity controlling Film forming Occlusive Texture enhancer

Science

This ingredient functions as an organogelator by establishing a three-dimensional physical network through its dilinoleic acid and ethylenediamine backbone. When dispersed in hydrophobic solvents, its long-chain amide end-caps create a microscopic lattice that stabilizes oils and forms a cohesive, occlusive film on the skin's surface, effectively reducing trans-epidermal water loss (TEWL) and anchoring pigments.


Research

High confidence
Effective range 0.1–15%
Optimal

5%

Key findings

  1. 01 Clinical evaluation of lip serum formulations demonstrated up to 4 hours of continuous hydration and significantly reduced pigment feathering.
  2. 02 Testing on keratinous substrates confirmed the formation of a non-sticky, water-resistant shield at concentrations between 1-5%.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

While effective as a viscosity modifier at very low levels, its primary benefits for moisture retention and film-forming typically require concentrations above 1%.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Thermally stable up to 42°C; requires heating to 88°C–94°C during the oil-phase preparation for proper incorporation.

Synergies

  • Non-polar oils
  • Lipophilic pigments
  • Sunscreen filters

Conflicts

  • Highly hydrophilic systems
  • Purely water-based serums

Safety

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

Due to its high molecular weight, the polymer does not penetrate the skin barrier, ensuring a high safety profile even at elevated concentrations.


Your Skin

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

Our Assessment

Valuable

An exceptional structuring agent for oil-based delivery systems that provides durable hydration and superior product architecture without compromising skin breathability.


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