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6-DIETHOXYMETHYL-HEXAHYDRO-METHANO-1H-INDENE.

Optional CAS 67633-93-6 / PERFUMING

A sophisticated fragrance molecule engineered as an acetal derivative to deliver controlled-release scent properties in luxury skincare formulations. This tricyclic compound provides distinctive metallic and sparkling olfactory notes while maintaining enhanced stability compared to its parent aldehyde structure. Its primary role is purely aesthetic, contributing no therapeutic skin benefits beyond sensory enhancement.

perfuming

Science

Functions exclusively as a perfuming agent through slow-release fragrance delivery, where the acetal structure acts as a molecular mask that gradually hydrolyzes to release the active aldehyde component over time, creating a sustained scent profile without direct physiological interaction with skin cells.


Research

Medium confidence
Effective range 0.1–1%
Optimal

0.5%

Key findings

  1. 01 Standard patch testing at typical usage concentrations (0.1-1.0%) showed no significant skin reactions in non-sensitized individuals while effectively contributing sparkle and metallic scent facets

Transparency

Not commonly dusted

As a specialized fragrance component with no skincare benefits beyond scenting, this ingredient is rarely subjected to dusting practices since its function is purely olfactory rather than therapeutic


The Formula

Solubility
Oil
Optimal pH 6 – 8.5
0 7 14

Stability

Exhibits pH-dependent stability due to acetal chemistry, with risk of hydrolysis to parent aldehyde and ethanol in acidic environments below pH 5.0, potentially altering scent profile and increasing irritation potential

Conflicts

  • Strong acids
  • Alpha Hydroxy Acids (AHAs)
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Low

Regulated under IFRA standards for Category 4 applications (Body Lotions/Creams), not classified as EU 26 common allergen but rare sensitization cases possible


Your Skin

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

Our Assessment

Optional

A well-tolerated fragrance ingredient that serves purely aesthetic purposes without therapeutic value, suitable for those prioritizing sensory experience in skincare.


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