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C10-13 ISOPARAFFIN.

Valuable CAS 68551-17-7 / SOLVENT

A lightweight, branched-chain hydrocarbon that serves as an elegant solvent and emollient in cosmetic formulations. This synthetic ingredient delivers excellent spreadability with a non-greasy finish while providing mild occlusive benefits to help minimize transepidermal water loss.

solvent emollient spreading agent

Science

Creates a thin, breathable hydrophobic film on the skin's surface that helps reduce water loss while maintaining a lightweight, non-sticky feel. Its branched molecular structure and low surface tension enable superior spreading properties and rapid absorption without residual heaviness.


Research

High confidence
Effective range ≤90%
Optimal

N/A

Key findings

  1. 01 Human patch testing demonstrated non-sensitizing, non-phototoxic, and non-irritating properties at cosmetic-use concentrations
  2. 02 Genotoxicity testing up to 1000 µg/mL showed no mutagenic activity in mammalian cell assays

Transparency

Not commonly dusted

Typically used as a functional solvent at moderate concentrations rather than as a showcase ingredient requiring marketing emphasis


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Exceptionally stable saturated hydrocarbon resistant to oxidation and pH variations due to absence of reactive functional groups

Synergies

  • Emulsifier systems
  • Oil-soluble actives
  • Volatile silicones

Conflicts

  • Highly polar aqueous systems without emulsification
  • Strong oxidizing agents

Safety

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

CIR Expert Panel confirms safety when formulated to be non-irritating. Typically used at lower concentrations than the 90% maximum as part of solvent or emulsifier systems.


Your Skin

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A well-tolerated, versatile ingredient that enhances product texture and performance without compromising skin comfort across multiple skin types.


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