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C9-11 ALKANE/CYCLOALKANE.

Valuable CAS 64742-49-0 / SOLVENT

A sophisticated, ultra-lightweight hydrocarbon blend that serves as a high-performance solvent and texture enhancer. It provides a weightless, silky finish to formulations, ensuring that active ingredients are distributed evenly across the skin surface without residual greasiness.

Solvent Emollient Texture Enhancer Delivery Vehicle

Science

This ingredient functions by lowering the surface tension of cosmetic formulas, which significantly improves spreadability and 'glide' during application. It creates a breathable, microscopic film on the skin that prevents transepidermal water loss (TEWL) while acting as a volatile carrier that helps deliver heavier active ingredients into the stratum corneum before evaporating cleanly.


Research

Medium confidence
Effective range 1–10%
Optimal

5%

Key findings

  1. 01 A 16-week clinical evaluation utilized this alkane mixture as a delivery vehicle for MMP inhibitors in anti-aging research, confirming its high skin biocompatibility and efficient active ingredient transport.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

As a functional solvent and emollient, it is rarely 'dusted' for marketing purposes. It is typically included at functional levels (1-10%) to achieve specific textural goals; levels below 1% are generally insufficient to provide the desired slip or solvency.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Highly stable and chemically inert hydrocarbon; it remains effective regardless of pH and does not degrade in the presence of most cosmetic actives. It is flammable with a flashpoint between 40-60°C.

Synergies

  • Sunscreen filters
  • MMP inhibitors
  • Silicone elastomers

Conflicts

  • Strong oxidizing agents
  • Strong acids

Safety

CIR Status
Safe as used
Max tested
50%
Pregnancy
Safe
Sensitization risk Low

Toxicologically comparable to C9-11 Isoparaffin. EU standards mandate benzene purity levels below 0.1% w/w. It is considered an aspiration hazard only in its raw, bulk industrial state, not in finished cosmetic dilutions.


Your Skin

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

Our Assessment

Valuable

An excellent, non-comedogenic carrier that optimizes the application experience and delivery of potent actives in high-performance skincare.


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