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C11-13 ISOPARAFFIN.

Valuable CAS 246538-78-3 / SOLVENT

A lightweight, branched hydrocarbon that delivers multi-functional benefits as both an emollient and solvent in cosmetic formulations. This versatile ingredient creates a breathable protective barrier while enhancing product texture and spreadability across all skin types.

Emollient Solvent Texture enhancer Barrier support

Science

Works as a barrier-supporting emollient by filling microscopic gaps between corneocytes to create smoother skin texture, while simultaneously forming a thin occlusive film that minimizes transepidermal water loss and maintains skin hydration levels.


Research

High confidence
Effective range 11.1–90%
Optimal

16%

Key findings

  1. 01 Human Repeat Insult Patch Testing at 11.1-16% concentrations demonstrated non-sensitizing and non-irritating properties with zero phototoxic reactions
  2. 02 Clinical evaluation up to 90% concentration confirmed effective emollient function without systemic toxicity concerns

Transparency

Not commonly dusted

As a functional solvent and emollient with established safety data, this ingredient is typically used at meaningful concentrations rather than trace amounts


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Demonstrates exceptional chemical inertness with superior oxidative and thermal resistance across standard cosmetic pH parameters

Synergies

  • UV filters
  • Non-polar actives
  • Lipophilic vitamins

Conflicts

  • Strong oxidizing agents
  • Highly polar aqueous systems without emulsification

Safety

CIR Status
Safe as used
Max tested
90%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel validation confirms safety in current usage patterns; male rat nephrotoxicity findings irrelevant to humans due to absence of alpha-2u-globulin protein


Your Skin

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

Our Assessment

Valuable

A well-tolerated, multi-functional ingredient that enhances product performance while supporting skin barrier function across all skin types.


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References