DIMETHYL-3-CYCLOHEXENE-1-CARBALDEHYDE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A dimethylcyclohexene carbaldehyde with both irritant and sensitization potential, used as a fragrance ingredient. The combined H317 (sensitization), H319 (eye), and environmental toxicity classifications indicate a challenging safety profile.
Dimethyl-3-Cyclohexene-1-Carbaldehyde is a cyclohexene carbaldehyde with gem-dimethyl substitution. The alpha,beta-unsaturated aldehyde structure (the formyl group is conjugated with the double bond) creates significant electrophilic reactivity. The H317 classification indicates skin sensitization, H315/H319 indicate irritation, and H411/H412 indicate aquatic toxicity. It is listed in EU Annex III of the Cosmetics Regulation as a fragrance allergen subject to declaration requirements when present above 0.001% in leave-on products or 0.01% in rinse-off products.
Skin benefits
- Fragrance ingredient with fresh, citrus, and herbal notes
Known concerns
- Skin sensitizer (H317)
- Skin and eye irritant (H315, H319)
- EU Annex III fragrance allergen requiring declaration
- Aquatic toxicity (H411, H412)
- Alpha,beta-unsaturated aldehyde with high reactivity
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Check your shelf
Find DIMETHYL-3-CYCLOHEXENE-1-CARBALDEHYDE in your products.
Scan any cosmetic product with LuxSense to see if it contains DIMETHYL-3-CYCLOHEXENE-1-CARBALDEHYDE and get a full ingredient breakdown with safety scores.
This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.