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Moumoujus

C13-16 ISOPARAFFIN.

Valuable CAS 68551-20-2 / SOLVENT

A high-purity, branched-chain hydrocarbon that serves as a sophisticated texture enhancer and moisture-locking emollient. It is frequently utilized in precision skincare to replicate the elegant, weightless finish of volatile silicones without using synthetic siloxanes.

Summary

Emollient Solvent Texture Enhancer Occlusive

Science

Mechanism of Action

By forming a microscopic, non-occlusive barrier on the stratum corneum, C13-16 Isoparaffin significantly reduces transepidermal water loss (TEWL). Its specific molecular weight allows for rapid spreading and a 'dry-touch' evaporation profile, providing immediate skin smoothness and aiding in the uniform distribution of active ingredients.

Research

Clinical Evidence

High confidence
Effective range 0.4–20%
Optimal

15%

Key findings

  1. 01 Clinical assessments published in the International Journal of Toxicology (2012) verify that concentrations up to 18% remain non-sensitizing and carry a negligible irritation profile for human skin.
  2. 02 Comparative volatility testing (US Patent 20090123398A1) confirms that blends including C13-16 Isoparaffin successfully mimic the aesthetic dry-down and 'slip' of Cyclopentasiloxane (D5).

Transparency

Dusting Analysis

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

As a functional texture agent and solvent, 'dusting' is rarely a concern; however, formulations using it below 0.4% may be including it solely for label claims rather than for its sensory or emollient benefits.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 12
0 7 14

Stability

Highly chemically inert and heat-stable, making it compatible with cold-process or hot-emulsification techniques.

Synergies

  • Isododecane
  • Mineral UV Filters
  • C12-14 Isoparaffin

Safety

Safety Profile

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

The CIR Expert Panel supports its safety in cosmetic use; while it can be used at very high levels in specialized products, skincare concentrations typically remain under 20% for optimal skin feel.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An excellent, non-comedogenic alternative to volatile silicones that provides a premium, silky finish while reinforcing the skin's moisture barrier.

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