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Moumoujus

TRIMETHYL-8-METHYLENEBICYCLO-4-UNDECENE.

Optional CAS 118-65-0 / PERFUMING

TRIMETHYL-8-METHYLENEBICYCLO-4-UNDECENE is a multi-functional ingredient primarily valued for its woody and spicy aroma as a perfuming agent. It also possesses recognized skin conditioning properties, contributing to the overall feel and appearance of the skin.

Summary

perfuming skin conditioning

Science

Mechanism of Action

This compound, along with its common isomers like beta-caryophyllene, functions by imparting a distinct woody and spicy scent profile to cosmetic formulations. Beyond its aromatic contribution, it is also noted for its ability to condition the skin, supporting its texture and hydration.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Oxidation of this ingredient, particularly its beta-caryophyllene isomer, may lead to increased allergenic activity. Formulators should consider strategies to minimize oxidation during manufacturing and storage to maintain product safety and stability.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

TRIMETHYL-8-METHYLENEBICYCLO-4-UNDECENE, and its common isomer beta-caryophyllene, is classified as a fragrance allergen. Regulatory bodies like the California Safe Cosmetics Program mandate reporting when present at or above 0.01% in rinse-off products and 0.001% in leave-on products. While a RIFM assessment for beta-caryophyllene suggests no skin sensitization concerns at current declared levels and no genotoxic, phototoxic, or photoallergenic risks, the SCCS highlights the allergenic potential of oxidized beta-caryophyllene. Prudent formulation practice advises minimizing potential irritation and sensitization, especially for constituents in botanicals.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Optional

This ingredient is primarily an optional perfuming agent with some skin conditioning benefits, but its classification as a fragrance allergen, particularly in oxidized forms, necessitates careful consideration of concentration and stability in formulations.

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