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BEHENETH-25.

Valuable CAS 26636-40-8 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A high-performance non-ionic emulsifier and surfactant derived from behenyl alcohol. It is engineered to bridge the gap between oil and water phases, ensuring skincare formulations remain homogenous, stable, and aesthetically elegant.

Emulsifying Surfactant Cleansing Texture Enhancer

Science

It functions by reducing the interfacial tension between incompatible oil and water molecules, creating a fine and stable dispersion. In specialized copolymer systems, its hydrophobic behenyl chains act as anchors to build a three-dimensional viscosity network, providing both structural integrity and a smooth skin feel.


Research

High confidence
Effective range 0.3–5%
Optimal

1.5%

Key findings

  1. 01 Confirmed to be non-irritating in both leave-on and rinse-off applications under standard cosmetic usage.
  2. 02 Validated as safe for public health and unlikely to pose risks in finished cosmetic products.

Transparency

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

As a functional texture-enhancer rather than a primary active, Beheneth-25 is rarely 'dusted.' It is typically used at technically functional levels (0.3%+) to ensure emulsion stability.


The Formula

Solubility
Both
Optimal pH 6 – 7.5
0 7 14

Stability

The molecule itself is resilient across a broad pH spectrum (3-11) and can withstand heat processing up to 80°C. However, peak structural stability in complex polymer blends occurs near a neutral pH.

Synergies

  • Acrylates Copolymers
  • Lipid-based emollients
  • Mineral UV filters

Conflicts

  • Strong oxidizing agents
  • Highly acidic environments (pH < 3) which may destabilize specific anionic blends

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Recognized as safe by the CIR when formulated to avoid irritation; its large molecular structure limits deep skin penetration.


Your Skin

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

Our Assessment

Valuable

A reliable, non-irritating stabilizer essential for creating sophisticated, high-clarity emulsions suitable for all skin types.


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References