Cinnamomum Zeylanicum Bark Oil

Cinnamomum Zeylanicum Bark Oil and pregnancy

Not Recommended

• Absorbed into the body
• Irritant

Cinnamon bark oil is a potent essential oil containing high levels of cinnamaldehyde and other volatile compounds. It is one of the more controversial essential oils due to its strong irritant properties and potential systemic effects when absorbed through skin. Many aromatherapists and some healthcare providers recommend avoiding cinnamon bark oil during pregnancy due to concerns about its effects on the uterus and circulation. While specific human studies on topical cinnamon oil during pregnancy are limited, some compounds in cinnamon have been shown to affect smooth muscle contraction in animal studies. Additionally, the high irritancy of cinnamon bark oil increases skin permeability, potentially leading to greater systemic absorption of other ingredients. The American Pregnancy Association lists cinnamon bark oil among essential oils to avoid during pregnancy. Although the concentration in cosmetic products is typically low and strictly regulated by IFRA, many obstetricians and dermatologists recommend choosing products without cinnamon bark oil during pregnancy as a precautionary measure. The ingredient provides only fragrance benefits, making it easy to substitute with safer alternatives. Given the lack of comprehensive safety data and the potential for irritation and sensitization, pregnant women should opt for fragrance-free or cinnamon-free products.

Cinnamomum Zeylanicum Bark Oil and breastfeeding

Caution Advised

• Irritant
• Passes into breast milk

Cinnamon bark oil in cosmetics presents moderate concerns for breastfeeding mothers, primarily due to its high irritancy and potential for sensitization. While systemic absorption from cosmetic products is limited, the oil's compounds can be absorbed through skin. The main concern is application near the breast area, where the infant might come into contact with residual oil or where components could transfer to breast milk. Cinnamaldehyde and related compounds in cinnamon bark oil are potent irritants that could cause reactions in infants if they come into contact with treated skin. Some aromatherapy sources suggest avoiding cinnamon bark oil during breastfeeding due to these concerns. Dermatologists generally advise breastfeeding mothers to avoid strongly irritating essential oils in products used on or near the chest area. Products containing cinnamon bark oil can likely be used safely on other areas of the body (face, hands), but many practitioners recommend choosing gentler alternatives given the lack of specific safety data and the availability of safer fragrance options.

Cinnamomum Zeylanicum Bark Oil and postpartum

Caution Advised

• Irritant
• Common allergen

For postpartum women not breastfeeding, cinnamon bark oil presents the same concerns as for the general population: high irritancy and strong allergenic potential. Postpartum skin may be more sensitive due to hormonal changes, potentially increasing reaction risk. The primary recommendation is to patch test any product containing cinnamon bark oil and to be aware that it is one of the most irritating essential oils used in cosmetics. Many dermatologists suggest avoiding it if you have sensitive skin or a history of fragrance allergies. Given that it serves only a fragrance function, gentler alternatives are widely available.

Cinnamomum Zeylanicum Bark Oil and trying to conceive

Caution Advised

• Irritant

While there is no direct evidence that topical cinnamon bark oil affects fertility, some practitioners recommend limiting exposure to strong essential oils when trying to conceive as a precautionary approach. The rationale is based on concerns about cinnamon's effects in pregnancy, with some suggesting it's prudent to avoid it before conception as well. Given the limited data and the ingredient's primary role as fragrance, women trying to conceive may choose to switch to products without cinnamon bark oil, though this is a conservative precaution rather than a medical necessity. The more pressing concern is the ingredient's high irritancy and allergenicity, which affects all users regardless of reproductive status.

Cinnamomum Zeylanicum Bark Oil and PCOS

Safe to Use

• Irritant

Cinnamon bark oil does not have specific interactions with PCOS or hormonal conditions when used topically in cosmetic products. There is no evidence that it affects androgen levels, insulin sensitivity, or other PCOS-related factors through topical application. The main concern for women with PCOS is the same as for the general population: cinnamon bark oil is a strong irritant and allergen. Women with PCOS who have reactive or acne-prone skin may want to avoid irritating ingredients like cinnamon bark oil, as inflammation can exacerbate acne and other skin issues. Some oral cinnamon supplements have been studied for their potential benefits on insulin resistance in PCOS, but these effects do not apply to topical cinnamon bark oil in cosmetics. For skincare purposes, women with PCOS can use products containing this ingredient if they tolerate it well, though gentler fragrance options may be preferable for sensitive skin.

Cinnamomum Zeylanicum Bark Oil and general use

Caution Advised

• Common allergen
• Irritant

Cinnamon bark oil is one of the most irritating and allergenic essential oils used in cosmetics. Its main component, cinnamaldehyde, is a well-documented contact allergen that appears on most dermatologists' lists of fragrance ingredients to avoid. Even at the low concentrations permitted by IFRA, it can cause contact dermatitis, burning sensations, and sensitization reactions. The European Scientific Committee on Consumer Safety (SCCS) has identified cinnamaldehyde as a priority allergen of concern. The International Fragrance Association restricts cinnamon bark oil to very low concentrations (typically under 0.05% in leave-on products) due to its high sensitization potential. Despite these restrictions, reactions still occur, particularly in individuals with sensitive skin or fragrance allergies. Dermatologists generally recommend avoiding products containing cinnamon bark oil, especially for those with sensitive skin, eczema, or a history of fragrance allergies. The ingredient provides only sensory benefits (fragrance), making it easy to substitute with less irritating alternatives. If using products with cinnamon bark oil, patch testing is essential, and discontinue use immediately if irritation occurs.

Everything else flagged for the same profiles

• Flagged in pregnancy
• Flagged in breastfeeding
• Flagged in postpartum
• Flagged in trying to conceive

Related ingredients

Ingredients that raise the same concerns.

• Lavandula Angustifolia OilPasses into breast milk, Irritant, Common allergen
• Arnica Montana Flower ExtractPasses into breast milk, Irritant, Common allergen
• Lavandula Hybrida OilPasses into breast milk, Irritant, Common allergen
• Santalum Album OilPasses into breast milk, Irritant, Common allergen
• Vetiveria Zizanoides Root OilPasses into breast milk, Irritant, Common allergen
• Cymbopogon Schoenanthus OilPasses into breast milk, Irritant, Common allergen

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.