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Moumoujus

2-ISOPENTENAL.

Optional CAS 107-86-8 / PERFUMING

An alpha,beta-unsaturated aldehyde compound that serves exclusively as a fragrance component in cosmetic formulations. This volatile aromatic molecule delivers a distinctive fruity-green scent profile by interacting with olfactory receptors. Unlike active skincare ingredients, 2-isopentenal provides no therapeutic skin benefits and functions solely to enhance product sensory experience.

Summary

perfuming

Science

Mechanism of Action

Functions purely as a fragrance agent by binding to olfactory receptors to create scent perception. Has no recognized biological activity on skin cells or therapeutic mechanism of action for skin improvement.

Research

Clinical Evidence

Medium confidence
Effective range 0.2–2.5%
Optimal

1%

Key findings

  1. 01 COSMILE Europe analysis showing 0.2-1% as standard fragrance component range in skincare products
  2. 02 SCCNFP inventory establishing 2.5% maximum concentration for leave-on cosmetic applications

Transparency

Dusting Analysis

Not commonly dusted

As a fragrance component with clear regulatory limits, dusting is uncommon since effectiveness depends on adequate concentration for scent delivery

The Formula

Formulation

Solubility
Both
Optimal pH 4.5 – 6.5
0 7 14

Stability

Volatile liquid requiring airtight packaging to prevent oxidation of aldehyde group to senecioic acid. Best stability maintained in controlled atmospheric conditions.

Conflicts

  • Nitrosating agents
  • Strong oxidizing agents
  • Strong bases

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
2.5%
Sensitization risk Moderate

Classified as skin sensitizer (H317) and potential irritant (H314) in pure form. Safety managed through IFRA fragrance standards and EU concentration limits.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A fragrance-only ingredient with moderate sensitization risk and no skin benefits beyond scent enhancement.

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