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3,7-DIMETHYL-3,6-OCTADIENAL.

Questionable CAS 55722-59-3 / PERFUMING

A volatile aldehyde compound primarily recognized for its antimicrobial properties and citrus-like fragrance profile. This ingredient demonstrates measurable activity against skin pathogens while providing antioxidant benefits through free radical scavenging mechanisms.

antimicrobial antioxidant perfuming

Science

Disrupts microbial cell membrane integrity while inhibiting inflammatory mediator production via the 5-LOX pathway, specifically reducing leukotriene B4 formation. Additionally scavenges free radicals to mitigate oxidative stress-induced tissue damage.


Research

Medium confidence
Effective range 0.78–6.25%
Optimal

2.5%

Key findings

  1. 01 MIC range of 0.78-6.25% demonstrated effectiveness against S. aureus and skin pathogens in lemongrass essential oil studies
  2. 02 2.5% concentration identified as minimum effective level for antifungal cream formulations

Transparency

Commonly dusted
Min. effective
0.12%
Red flag below
0.15%

Often added in trace amounts for fragrance masking rather than therapeutic benefit, with IFRA restrictions limiting meaningful antimicrobial concentrations in face products to 0.12%


The Formula

Solubility
Oil
Optimal pH 2.5 – 3.5
0 7 14

Stability

Exhibits high volatility and oxidation susceptibility, particularly under light and air exposure. Requires stabilization through pickering emulsions or nanoemulsion technology.

Conflicts

  • Silver ions
  • Strong oxidizing agents
  • Strong acids and bases

Safety

CIR Status
Not reviewed
Max tested
0.12%
Sensitization risk Moderate

IFRA Category 5B restriction limits use to 0.12% in facial moisturizers. NESIL established at 7000 μg/cm2. FDA GRAS status for flavoring applications only.


Your Skin

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

Our Assessment

Questionable

Limited to subtherapeutic concentrations in skincare due to sensitization concerns, making it more suitable as a fragrance component than active ingredient.


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