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Moumoujus

CETYL ISONONANOATE.

Valuable CAS 84878-33-1 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

A sophisticated liquid ester that provides a velvety, non-greasy finish while functioning as a high-performance skin-conditioning agent. It bridges the gap between traditional oils and modern emollients, offering superior spreadability and barrier protection.

Summary

Emollient Occlusive agent Skin conditioner Solubilizer Texture enhancer

Science

Mechanism of Action

This ingredient functions as a medium-spreading emollient that creates a breathable, hydrophobic film on the stratum corneum. This occlusive layer reinforces the skin's natural lipid barrier, effectively reducing transepidermal water loss (TEWL) while improving the solubility of active ingredients and UV filters within the formula.

Research

Clinical Evidence

High confidence
Effective range 2–40%
Optimal

10%

Key findings

  1. 01 Human Repeated Insult Patch Tests (HRIPT) confirm non-irritating and non-sensitizing properties at concentrations between 2-10%.
  2. 02 Assessment of alkyl esters at 100% concentration indicates significant improvement in water permeability barrier function via lipid phase modulation.
  3. 03 Safety data validated for leave-on applications up to 40% in specialized body oil formulations.

Transparency

Dusting Analysis

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

Typically utilized as a primary or secondary emollient at functional levels (2-10%). Because it also serves as a structural solvent for UV filters and other actives, it is rarely included at sub-functional 'label claim' percentages.

The Formula

Formulation

Solubility
Oil
Optimal pH 4.5 – 8
0 7 14

Stability

Exhibits excellent oxidative stability. However, the ester bond may undergo hydrolysis if exposed to highly acidic or alkaline environments (outside the 4.5-8.0 range).

Synergies

  • Lipophilic UV filters
  • Vitamin E
  • Ceramides

Conflicts

  • Strong oxidizing agents
  • Extreme pH environments

Safety

Safety Profile

CIR Status
Safe as used
Max tested
40%
Pregnancy
Safe
Sensitization risk Low

Composed of Cetyl Alcohol and Isononanoic Acid, both of which have established safety profiles in cosmetic and food applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An exceptionally versatile and reliable emollient that provides essential barrier support and elegant haptics without the risk of irritation or pore-clogging.

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