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Moumoujus

PERFLUORONONYLETHYL CARBOXYDECYL LAURYL/BEHENYL DIMETHICONE.

Avoid / SKIN CONDITIONING

Perfluorononylethyl Carboxydecyl Lauryl/Behenyl Dimethicone is a hydrophobic, viscoelastic polymer designed to enhance skin and hair's sensory properties. It functions as a skin conditioning agent, forming a protective barrier that reduces water loss and defends against external aggressors. This ingredient also imparts a desirable slippery feel and shine to formulations.

Summary

Skin Conditioning Skin Protectant Barrier Forming Sensory Enhancer

Science

Mechanism of Action

This ingredient operates as a highly effective skin protectant and conditioner due to its hydrophobic nature and pronounced viscoelasticity. It forms a resilient barrier on the skin's surface, which demonstrably reduces trans-epidermal water loss, thereby enhancing skin hydration. This barrier also acts as a physical shield, preventing the ingress of exogenous substances into the stratum corneum and offering protection against minor irritations such as chafing, chapping, cracking, or windburn. Its unique rheological properties contribute to a smooth, slippery feel and a lustrous finish.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Information regarding the dusting potential of this ingredient is not available in the provided research data.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

As part of the dimethicone crosspolymer family, this ingredient is generally stable under anticipated conditions encountered in cosmetic formulations.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel evaluated dimethicone and related substituted-methicone polymers, including similar crosspolymers, concluding them safe for cosmetic use when formulated to be non-irritating. However, data were insufficient to confirm safety for products applied via airbrush technology due to potential respirability concerns. A critical safety note is the presence of the 'Perfluorononylethyl' moiety, which classifies this ingredient as a Per- and polyfluorinated chemical (PFAS). PFAS compounds are associated with significant adverse health effects, including immunotoxicity, reproductive and developmental toxicity, and disruption of thyroid function.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

While offering beneficial skin conditioning and protective properties with low irritancy, this ingredient is classified as a PFAS chemical, linked to significant health concerns, therefore warranting its avoidance in precision skincare formulations.

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