1-METHYL-4-METHYLETHENYL-CYCLOHEXENE SULFURIZED

1-METHYL-4-METHYLETHENYL-CYCLOHEXENE SULFURIZED.

Questionable CAS 68921-26-6 / PERFUMING

A sulfurized terpene compound derived from the reaction of dipentene with sulfur, primarily serving as a fragrance component in cosmetic formulations. This oil-soluble ingredient delivers a distinctive citrus-grapefruit scent profile with sulfurous undertones. While it may possess minor antioxidant properties typical of sulfurized hydrocarbons, its cosmetic value lies predominantly in its perfuming capabilities.

perfuming fragrance component

Science

Mechanism of Action

Functions as an olfactory modifier by contributing volatile aromatic compounds that create a characteristic citrus-sulfur fragrance profile. The sulfurized terpene structure may provide modest antioxidant activity through free radical scavenging, though this is secondary to its primary fragrance function.

Research

Clinical Evidence

Low confidence

Effective range N/A

Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a fragrance component with known sensitization potential, this ingredient is unlikely to be artificially inflated in marketing claims.

The Formula

Formulation

Solubility

Oil

Optimal pH N/A

0 7 14

Stability

Oxidation-sensitive compound requiring storage below 18°C under nitrogen atmosphere. Degrades when exposed to air, light, and moisture, forming terpene ketones and alcohols.

Conflicts

strong oxidizing agents

Safety

Safety Profile

CIR Status

Not reviewed

Sensitization risk High

Classified as Category 2 skin irritant and Category 1 skin sensitizer. Approved for cosmetic use in EU CosIng database but requires careful consideration in leave-on products for sensitive skin types.

Our Assessment

Verdict

Questionable

A fragrance ingredient with significant sensitization concerns that outweigh its limited cosmetic benefits.

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References

Sources