Cineole

Cineole and pregnancy

Caution Advised

• Absorbed into the body
• Irritant

Cineole (eucalyptol) is a volatile organic compound found in essential oils, particularly eucalyptus. It can penetrate the skin and has biological activity, though it's used in relatively small amounts in most cosmetic products. While there is no strong evidence of teratogenicity from topical cineole use, aromatherapy experts and some healthcare providers advise caution with eucalyptol-containing essential oils during pregnancy. The concern stems from its penetration ability and the general recommendation to limit exposure to concentrated volatile compounds during pregnancy. Data on topical use at cosmetic concentrations is limited. Many dermatologists consider low concentrations in finished cosmetic products acceptable, while others recommend avoiding concentrated essential oil products containing cineole during pregnancy. The conflicting opinions reflect the limited human pregnancy data. Women may choose to avoid products with cineole or eucalyptus oil as a precautionary measure.

Cineole and breastfeeding

Caution Advised

• Passes into breast milk
• Infant exposure

Cineole is a lipophilic (fat-soluble) compound that can be absorbed through the skin and potentially transfer to breast milk. It's particularly a concern when used in higher concentrations or over large body areas. Lactation consultants and aromatherapists often recommend limiting exposure to eucalyptol-containing products while breastfeeding, particularly concentrated essential oils applied near the breast area. While small amounts in cosmetic fragrances may pose minimal risk, there is concern about infant exposure through both milk transfer and inhalation if used on or near the chest. The evidence is insufficient to establish clear safety, leading many healthcare providers to suggest caution. If using products containing cineole while breastfeeding, avoid application near the breast area and opt for products with lower concentrations.

Cineole and postpartum

Safe to Use

• Irritant
• Common allergen

For postpartum women not breastfeeding, the primary concerns with cineole are skin irritation and potential allergic reactions rather than systemic effects. The ingredient may provide some anti-inflammatory benefits. Women should perform a patch test if they have sensitive skin and discontinue use if irritation occurs. Otherwise, cineole in standard cosmetic concentrations is generally acceptable for this population.

Cineole and trying to conceive

Safe to Use

There are no documented fertility concerns with topical cineole use at cosmetic concentrations. While some women prefer to avoid all essential oil components when trying to conceive, evidence of reproductive harm is lacking. Women trying to conceive can generally continue using cosmetic products containing cineole. Those who prefer maximum caution may choose to switch to fragrance-free alternatives, but this is a personal choice rather than a medical necessity.

Cineole and PCOS

Safe to Use

Cineole has anti-inflammatory properties and no known hormonal effects relevant to PCOS. In cosmetics, it's used primarily as a fragrance component and for its cooling sensation. There are no documented concerns regarding cineole use by women with PCOS. The ingredient does not affect androgen levels, insulin sensitivity, or other PCOS-related pathways. Women with PCOS can use products containing cineole, though those with sensitive skin should monitor for irritation as with any fragrance component.

Cineole and general use

Caution Advised

• Irritant
• Common allergen

Cineole (eucalyptol) is a naturally occurring compound used in cosmetics for fragrance and its cooling, penetrating properties. It's found in many essential oils, particularly eucalyptus. The main concerns are skin irritation and allergic reactions in sensitive individuals. The SCCS and IFRA have established concentration limits for its safe use in cosmetics. People with sensitive skin, eczema, or respiratory conditions should use products containing cineole with caution. For most people, cineole in standard cosmetic concentrations is well-tolerated. However, those prone to fragrance sensitivities should consider patch testing or avoiding products with this ingredient.

Everything else flagged for the same profiles

• Flagged in pregnancy
• Flagged in breastfeeding

Related ingredients

Ingredients suggested in place of Cineole, each one with its own page here.

• Allantoin
• Bisabolol

Ingredients that raise the same concerns.

• Juniperus Mexicana OilInfant exposure, Passes into breast milk, Irritant
• Ocimum Basilicum OilInfant exposure, Passes into breast milk, Irritant
• Helichrysum Italicum Flower OilInfant exposure, Passes into breast milk, Irritant
• Eugenia Caryophyllus Bud OilInfant exposure, Passes into breast milk, Irritant
• Azadirachta Indica Seed OilInfant exposure, Passes into breast milk, Irritant
• Cinnamomum Camphora Bark OilInfant exposure, Passes into breast milk, Irritant

Where this came from

Truva summarises published guidance from bodies including ACOG, the FDA, the EU SCCS and the Cosmetic Ingredient Review. It has no access to your medical history and it is not a substitute for your doctor, dermatologist or midwife. These assessments have not been reviewed by a clinician, and nothing here is a diagnosis or a prescription. If you are pregnant, breastfeeding or being treated for PCOS, take the ingredient list to the person looking after you.

Assessment last pulled from the ingredient database on 15 September 2026.