Skip to content

Other

p-Mentha-1,3-diene

CAS 99-86-5
42

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

P-Mentha-1,3-diene is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

p-Mentha-1,3-diene (alpha-terpinene) is a monoterpene found in tea tree and other essential oils. The EU's IFRA program has flagged it as a skin sensitizer requiring restrictions in consumer products. While naturally occurring, it lacks adequate safety data for use in leave-on cosmetic formulations without concentration limits.

Known concerns

  • Skin sensitizer (IFRA restricted)
  • Limited safety data for cosmetics
  • Potential oxidation products increase allergen risk

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related others

42
1-Hydroxy-3-nitro-4-(3-hydroxypropylamino)benzene (see note 17)
Other
 42
1-METHYL-4-METHYLETHENYL-CYCLOHEXENE SULFURIZED
Other
 42
2-(4-Allyl-2-methoxyphenoxy)-N,N-diethylacetamide and its salts
Other
 42
2-Chloro-6-fluoro-phenol
Other
 42
2-NITRO-P-PHENYLENEDIAMINE SULFATE
Other
 42
2-Nitro-N1-phenyl-benzene-1,4- diamine
Other
 42
3-METHYL-5-PHENYL-2-PENTENENITRILE
Other
 42
3-Methyl-1-phenyl-5-pyrazolone
Other

Check your shelf

Find p-Mentha-1,3-diene in your products.

Scan any cosmetic product with LuxSense to see if it contains p-Mentha-1,3-diene 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, so always read the physical product label and consult a healthcare professional for personal concerns.