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Moumoujus

C28-36 OLEFIN.

Valuable / SKIN CONDITIONING

A high-purity, long-chain synthetic hydrocarbon that functions as a structural emollient and barrier-enhancing agent. It is prized in precision skincare for its ability to provide a smooth, water-repellent film that preserves skin integrity without a heavy or greasy residue.

Summary

Occlusive emollient Viscosity increasing agent Skin-conditioning agent Rheology modifier

Science

Mechanism of Action

C28-36 Olefin acts as an occlusive shield, physically preventing trans-epidermal water loss (TEWL) by forming a microscopic, breathable barrier on the stratum corneum. Additionally, its high molecular weight allows it to modify the texture of formulas, increasing viscosity and ensuring the stable suspension of active ingredients in anhydrous or oil-rich systems.

Research

Clinical Evidence

High confidence
Effective range 1–15%
Optimal

15%

Key findings

  1. 01 Clinical assessments verified that leave-on applications containing up to 15% concentration are non-irritating to the face and neck.
  2. 02 Human Repeated Insult Patch Testing (HRIPT) on structurally similar long-chain polyenes at 100% concentration confirmed a total absence of dermal sensitization or irritation.

Transparency

Dusting Analysis

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

Because this ingredient is primarily used for its physical and structural properties rather than as a high-cost bio-active, it is rarely 'dusted.' However, concentrations below 1% in heavy barrier creams may indicate it is being used for marketing claims rather than functional occlusion.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 11
0 7 14

Stability

Highly chemically inert; it remains stable under extreme temperature conditions (melting point typically requires heating to 70-85°C) and is unaffected by broad pH fluctuations.

Synergies

  • Ceramides
  • Squalane
  • Mineral UV filters

Conflicts

  • Water-only systems
  • High-polarity solvents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
15%
Pregnancy
Safe
Sensitization risk Low

Due to its substantial molecular size, the ingredient cannot penetrate the skin barrier, making it safe for systemic health and pregnancy.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An exceptionally stable and non-sensitizing barrier agent that provides essential moisture retention and structural integrity to high-performance topical formulas.

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References

Sources