Baby Safety / Compounds / alpha-Terpineol

Is alpha-Terpineol safe for babies and kids?

Moderate risk for kids

Not medical or professional safety advice, and not a substitute for a qualified clinician — consult one. Full disclaimer →

Infants are more vulnerable to alpha-Terpineol than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is alpha-terpineol?

The IUPAC name is 2-(4-methylcyclohex-3-en-1-yl)propan-2-ol.

Also known as: 2-(4-methylcyclohex-3-en-1-yl)propan-2-ol, p-Menth-1-en-8-ol, 1-p-Menthen-8-ol, Terpineol 350.

IUPAC name
2-(4-methylcyclohex-3-en-1-yl)propan-2-ol
CAS number
98-55-5
Molecular formula
C10H18O
Molecular weight
154.25 g/mol
SMILES
CC1=CCC(CC1)C(C)(C)O
PubChem CID
17100

Risk for babies

Moderate risk

Infants are more vulnerable to alpha-Terpineol than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Context-dependent

Prenatal exposure to alpha-Terpineol through personal care products may affect fetal development. Some fragrance chemicals are sensitizers or endocrine-active compounds with transplacental transfer.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

3 regulatory and scientific bodies have classified alpha-Terpineol. The classifications differ — that's the data.

AgencyYearClassificationNotes
IFRA2024no_restrictionNo IFRA restriction.
FDA1965GRASGRAS food flavoring
EU_COSMETICS2023allergen_disclosureEU Cosmetics Reg (EC) 1223/2009 Annex III·343 declarable fragrance allergen (added by Reg (EU) 2023/1545), CAS 98-55-5 — must be declared in the ingredient list above 0.001% (leave-on) / 0.01% (rinse-off). D-385 correction: record previously listed only IFRA 'no_restriction', under-stating EU allergen-declaration status.

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter alpha-terpineol

  • Personal Care — perfume, soap, lotion, shampoo
  • Consumer Products — cleaning products, air fresheners
  • Fragrance — perfume, cologne, scented personal care products, household fragrance products, candles
    Identified in Fragrance Ingredient Safety Priority Research database (2,325 ingredients)

Safer alternatives

Lower-risk approaches that achieve a similar outcome to alpha-Terpineol:

  • Linalool
    Trade-offs: Alternative fragrance ingredient; individual safety profile should be assessed per IFRA standards; sensitization potential varies by compound; patch testing recommended for sensitive individuals.
    Relative cost: 1.2-2×
  • Dihydromyrcenol
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 1.2-2×

Frequently asked questions

Is alpha-terpineol safe for kids?

Infants are more vulnerable to alpha-Terpineol than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain alpha-terpineol?

alpha-Terpineol appears in: perfume (Personal care); soap (Personal care); cleaning products (Consumer products); air fresheners (Consumer products); perfume (Fragrance).

What should I do if my child is exposed to alpha-terpineol?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about alpha-terpineol?

alpha-Terpineol has been classified by 3 agencies including IFRA, FDA, EU_COSMETICS, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See alpha-Terpineol in the baby app

Look up products containing alpha-terpineol, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (1)
  1. PubChem Compound Database (2026) — database

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for medical, pediatric, legal, or regulatory advice. Why we built ALETHEIA →