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3-METHYL-5-(2,2,3-TRIMETHYL-3-CYCLOPENTENYL)PENT-4-EN-2-OL.

Questionable CAS 67801-20-1 / PERFUMING

A synthetic sandalwood fragrance compound that delivers woody aromatic notes to cosmetic formulations. Known commercially as Ebanol, this ingredient primarily serves perfuming functions rather than delivering active skincare benefits.

perfuming

Science

Functions as an olfactory agent by binding to scent receptors to provide sandalwood-like fragrance and mask underlying product odors. While structurally related to compounds that may interact with OR2AT4 receptors for potential skin benefits, this ingredient's documented role remains limited to sensory enhancement.


Research

Low confidence
Effective range 0.1–1%
Optimal

N/A

Key findings

  1. 01 SCCS fragrance allergen evaluation identified this as primarily a contact sensitizer rather than active skincare agent at 0.1-1.0% concentrations

Transparency

Not commonly dusted

Used at functional concentrations for fragrance purposes rather than trace amounts for marketing appeal


The Formula

Solubility
Oil
Optimal pH 2 – 10
0 7 14

Stability

Demonstrates excellent stability in alcoholic and alkaline environments, with acceptable performance across wide pH range but degrades in presence of oxidizing conditions

Conflicts

  • Strong oxidizing agents
  • Liquid bleach

Safety

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Moderate

Recognized contact allergen requiring mandatory declaration above 0.001% in leave-on products and 0.01% in rinse-off formulations per EU regulations. Safety evaluated by RIFM rather than CIR.


Your Skin

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

Our Assessment

Questionable

A fragrance ingredient with established allergen potential that provides no documented active skincare benefits.


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References