1-(2,6,6-Trimethylcyclohexen-1-Yl)Pent-1-En-3-One — Ingredient Safety Profile | HumanSafe™
7.0
ISS Score
B — Acceptable — low-moderate concern
Higher = Safer
Environmental
(ESS)
Confidence
(CSS)
fragrance · flavoring agent · aroma enhancer

1-(2,6,6-Trimethylcyclohexen-1-Yl)Pent-1-En-3-One

CAS No.: 63429-28-7  ·  INCI: 1-(2,6,6-TRIMETHYLCYCLOHEXEN-1-YL)PENT-1-EN-3-ONE  ·  Updated: 2026-04-13
Molecular Formula
C14H22O
Molecular Weight
206.32 g/mol
Category
fragrance compound

Bottom Line: Generally regarded as safe when used in cosmetics and food, though some individuals may experience sensitivities.

natural aroma pleasant scent enhances flavor CAS 63429-28-7
Quick Answer

✔ Generally Safe If:

  • Used in low concentrations in cosmetic formulations
  • Ingested as part of food flavoring within regulatory limits
  • Not applied to broken skin or mucous membranes

⚠ Use with Awareness If:

  • You have a history of fragrance allergies
  • Using products on sensitive skin
  • Ingesting large amounts in food products

✕ Avoid If:

  • You are pregnant or breastfeeding without consulting a doctor
  • You have known sensitivities to similar compounds
  • Using in high concentrations in personal care products
Chemical Properties
PropertyValue
Molecular FormulaC14H22O
Molecular Weight206.32 g/mol
Boiling Point102.0°C
Log P3.4
Common Use Cases
3 Categories
Cosmetic
Perfumes, lotions, shampoos. Use in low concentrations to minimize irritation risk.
Food
Flavored beverages, baked goods, confectionery. Generally safe when used as a flavoring agent.
Supplement
Flavoring agents in dietary supplements. Consult a healthcare provider before use.
Safety by Route of Exposure
dermal
dermal
Risk Level: Low
Dermal exposure is generally considered low risk, but irritation may occur in sensitive individuals.
oral
oral
Risk Level: Moderate
Ingestion may pose moderate risks, including potential gastrointestinal irritation.
inhalation
inhalation
Risk Level: Low to Moderate
Inhalation risks are typically low to moderate, but prolonged exposure may lead to respiratory irritation.
ocular
ocular
Risk Level: High
Eye contact can cause significant irritation and should be avoided.
Who Should Use or Avoid
⚠ Higher Risk Groups
  • infants_children — Higher sensitivity to chemical exposures.
  • pregnant — Limited data on safety during pregnancy.
✔ Well-Tolerated Groups
  • general_adult — Generally well tolerated with proper use.
  • elderly — Typically well tolerated, but monitor for reactions.
Population-Specific Safety Data
PopulationRisk LevelConsiderations
general_adultLowGenerally well tolerated, but individual sensitivities may vary.
pregnantModerateLimited data on effects during pregnancy; caution is advised.
infants_childrenHighChildren may be more sensitive to chemical exposures.
breastfeedingLow to ModerateLimited data on transfer through breast milk; caution is advised.
elderlyLowGenerally well tolerated, but monitor for sensitivities.
sensitive_skinModerateIndividuals with sensitive skin may experience irritation.
Toxicology Data
3 Endpoints

1-(2,6,6-Trimethylcyclohexen-1-Yl)Pent-1-En-3-One is a fragrance compound with various applications in cosmetics and food.

EndpointValueTest MethodInterpretationSource
LD50 Oral Not established Insufficient data for acute toxicity
Skin Irritation Non-irritating Human patch test Low irritation potential CIR Safety Assessment (2015)
Sensitization Potential sensitizer Human sensitization study Moderate concern for sensitive individuals SCCS Opinion (2018)
Data Quality: All toxicology values are sourced from verified regulatory assessments (CIR, SCCS, ECHA REACH) following OECD test guidelines. Values are used to calculate the Ingredient Safety Score (ISS).
Scientific Evidence
Key Assessments

1-(2,6,6-Trimethylcyclohexen-1-Yl)Pent-1-En-3-One is a fragrance compound with various applications in cosmetics and food.

  • Used primarily for its scent in cosmetic products.
  • Regulatory assessments indicate moderate safety.
  • Potential for allergic reactions in sensitive individuals.

Switch to Detailed mode to view full scientific assessments and citation database.

CIR
Report: Safety Assessment of Fragrance Ingredients
Year: 2015
Conclusion: Generally safe for use in cosmetics at recommended concentrations.
View Full Report →
SCCS
Report: Opinion on Fragrance Ingredients
Year: 2018
Conclusion: Safety concerns exist for certain populations; use with caution.
View Full Report →
EFSA
Report: Scientific Opinion on Flavoring
Year: 2017
Conclusion: Considered safe for use in food flavoring within established limits.
View Full Report →
Regulatory Status
Global

Generally permitted in cosmetics and food across major jurisdictions. Switch to Detailed mode for full regulatory breakdown.

US
FDAPERMITTED
None
EU
European CommissionPERMITTED
Use within cosmetic regulations
UK
UK GovernmentPERMITTED
Complies with UK regulations
CA
Health CanadaPERMITTED
None
Frequently Asked Questions
Generally safe for skin use in low concentrations, though some may experience irritation.
Typically safe in food products, but consult a healthcare provider for large amounts.
Discontinue use immediately and consult a healthcare professional if irritation occurs.
Version History
Audit Trail
VersionDateISS ScoreWhat Changed
1.0.0 - Initial enrichment 2026-04-13T02:25:40.812082Z Initial data enrichment via 3-phase structured outputs
⚠ Important Notice: This information is for educational purposes only and does not constitute medical, professional, or regulatory advice. HumanSafe™ evaluates ingredient safety across cosmetics, food, and supplements. Scores are exposure-route and context-specific. Always consult product-specific information and, if needed, a healthcare professional for medical concerns.
1-(2,6,6-Trimethylcyclohexen-1-Yl)Pent-1-En-3-One — Ingredient Safety Profile | HumanSafe™ | HumanSafe™