Myroxylon Pereirae Oil

Myroxylon Pereirae Oil and pregnancy

Caution Advised

• Common allergen
• Irritant
• Absorbed into the body

Myroxylon pereirae oil, also known as Peru balsam, is a fragrant resin derived from tree bark. It contains various aromatic compounds including cinnamein, benzoic acid, and cinnamic acid. While used for its pleasant scent and purported wound-healing properties, it is one of the most potent contact allergens in cosmetics. During pregnancy, skin often becomes more sensitive and reactive due to hormonal changes, which may increase the likelihood of allergic reactions to Peru balsam. While there is no direct evidence of teratogenic effects, the ingredient can cause contact dermatitis and skin inflammation. Some components of Peru balsam have theoretical concerns about systemic absorption through damaged skin, though studies specifically addressing pregnancy safety are lacking. The presence of eugenol and other phenolic compounds raises questions about endocrine activity, though this has not been definitively established. Many dermatologists recommend avoiding known strong allergens like Peru balsam during pregnancy, particularly because pregnant women are more susceptible to skin sensitivities. ACOG does not specifically address Peru balsam, but general guidance suggests avoiding unnecessary exposure to potential allergens. Women with existing sensitivities should definitely avoid this ingredient, and even those without prior reactions may want to choose alternatives during pregnancy when skin reactivity is heightened.

Myroxylon Pereirae Oil and breastfeeding

Caution Advised

• Common allergen
• Infant exposure

Myroxylon pereirae oil is a highly allergenic fragrance ingredient. When applied topically, it remains primarily on the skin surface, though some components may be absorbed systemically in small amounts. The primary concern during breastfeeding is direct infant contact with the ingredient on the mother's skin, particularly if applied to the chest area. Peru balsam can cause allergic contact dermatitis in infants through direct contact. While systemic transfer to breast milk is unlikely to be significant, the risk of sensitizing the infant through skin contact is real. Infants may develop allergic reactions from direct contact with products containing Peru balsam on the mother's skin. Dermatologists generally recommend that breastfeeding mothers avoid applying products containing Peru balsam to areas that will come in contact with the infant, especially the chest, neck, and hands. If used elsewhere on the body, careful washing before holding the baby is advisable. Given the high allergenic potential and alternative soothing ingredients available, many mothers choose to avoid this ingredient entirely during the breastfeeding period.

Myroxylon Pereirae Oil and postpartum

Safe to Use

• Common allergen
• Irritant

For postpartum women who are not breastfeeding, the concerns with Myroxylon pereirae oil are primarily related to its high allergenic potential rather than specific postpartum issues. Postpartum skin may still be more sensitive due to hormonal fluctuations. If you have not previously reacted to Peru balsam, use during the postpartum period carries the same risks as general population use: primarily contact dermatitis. However, the postpartum period is not an ideal time to introduce highly allergenic ingredients if you haven't used them before. For those with sensitive skin or a history of allergies, it remains advisable to avoid this ingredient.

Myroxylon Pereirae Oil and trying to conceive

Safe to Use

• Common allergen

Myroxylon pereirae oil is a topical fragrance ingredient with no known effects on fertility or reproductive function. While it contains various aromatic compounds, there is no evidence linking topical use to fertility concerns. Women trying to conceive can use products containing Peru balsam without concerns about fertility impacts. The primary consideration remains the ingredient's allergenic potential. Since you may want to continue using your skincare products if you become pregnant, it may be worth considering whether to avoid establishing use of a potentially problematic ingredient, though this is a personal choice rather than a medical necessity.

Myroxylon Pereirae Oil and PCOS

Safe to Use

• Common allergen

Myroxylon pereirae oil is primarily a fragrance ingredient with known allergenic properties. It does not have documented hormonal activity or effects on androgen or insulin metabolism relevant to PCOS. For women with PCOS, the main concern remains the ingredient's high potential for causing allergic contact dermatitis. There is no evidence that Peru balsam affects hormone levels or interferes with PCOS management. However, inflammation from allergic reactions could theoretically worsen skin conditions. Women with PCOS can use products containing Peru balsam if they tolerate it without allergic reactions, though given its high sensitization rate, choosing fragrance-free alternatives may be preferable, especially for those dealing with acne or sensitive skin common in PCOS.

Myroxylon Pereirae Oil and general use

Caution Advised

• Common allergen
• Irritant

Myroxylon pereirae oil, commonly called Peru balsam, is a natural resin used primarily for fragrance in cosmetics. It has a warm, vanilla-like scent and is found in various personal care products, perfumes, and some topical medicinal preparations. Peru balsam is recognized as one of the most common and potent contact allergens in cosmetic products. According to the American Contact Dermatitis Society, which named it Allergen of the Year in 2001, sensitization rates in the general population range from 1-3%, with higher rates among those with existing contact dermatitis. Once sensitized, individuals may experience allergic reactions to related compounds found in foods (citrus fruits, tomatoes, chocolate) and other fragrances. The allergenicity is attributed to compounds including cinnamein, cinnamic acid, and benzoic acid derivatives. The EU Cosmetics Regulation requires Peru balsam to be labeled when present above 0.001% in leave-on products due to its allergenic potential. Many dermatologists and allergists recommend avoiding this ingredient, particularly for those with sensitive skin or a history of fragrance allergies. Patch testing can determine individual sensitivity before using products containing this ingredient.

Everything else flagged for the same profiles

• Flagged in pregnancy
• Flagged in breastfeeding

Related ingredients

Ingredients suggested in place of Myroxylon Pereirae Oil, each one with its own page here.

• Bisabolol
• Allantoin
• Colloidal Oatmeal

Ingredients that raise the same concerns.

• Citrus Aurantium Bergamia Fruit OilInfant exposure, Irritant, Common allergen
• Cocamide DEAInfant exposure, Irritant, Common allergen
• Juniperus Mexicana OilInfant exposure, Irritant, Common allergen
• Cinnamomum Zeylanicum Bark ExtractInfant exposure, Irritant, Common allergen
• Ocimum Basilicum OilInfant exposure, Irritant, Common allergen
• Helichrysum Italicum Flower OilInfant exposure, 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.