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BICYCLOPENTYLYL BUTENOATE.

Optional CAS 68039-73-6 / PERFUMING

An aromatic ester utilized in precision skincare for its fruity-floral olfactory properties. It serves as a sophisticated masking agent to neutralize base ingredient odors, ensuring a consistent and pleasant sensory experience for the user.

perfuming masking

Science

It acts as a synthetic fragrance compound that releases a scent profile reminiscent of jasmine and stone fruits. On a molecular level, it functions as a masking agent by overlaying the chemical odors of raw materials with a more desirable fruity-fresh aroma.


Research

Medium confidence
Effective range 0.1–5%
Optimal

5%

Key findings

  1. 01 Human experience testing has demonstrated that concentrations reaching the 5% threshold may induce localized skin irritation.
  2. 02 OECD 402 dermal testing indicates low acute toxicity, though potential for skin and ocular irritation exists under concentrated exposure.

Transparency

Not commonly dusted
Min. effective
0.01%

As a fragrance component, it is rarely 'dusted' because its inclusion is driven by sensory requirements rather than bioactive claims. However, high concentrations are avoided to prevent sensitization.


The Formula

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

Maintains structural integrity in standard emulsions but is prone to ester hydrolysis in highly acidic environments (pH < 3.0).

Conflicts

  • Strong oxidizing agents
  • Chlorine or peroxide-based bleaching agents
  • Strongly acidic solutions

Safety

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Moderate

Classified as a GHS Category 2 Skin Irritant. Usage should adhere to IFRA standards, which generally cap usage at 5% in fragrance concentrates.


Your Skin

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

Our Assessment

Optional

A functional fragrance additive that enhances product aesthetics but offers no direct physiological benefit to the skin.


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