Lapachol

Lapachol and pregnancy

Not Recommended

• Absorbed into the body
• Fetal development

Lapachol is a quinone compound extracted from lapacho tree bark, used in cosmetics for its antioxidant and antimicrobial properties. It belongs to a class of chemicals that can have biological activity beyond simple topical effects. Animal studies have shown that lapachol and related naphthoquinones can have anti-implantation and abortifacient effects when administered systemically. While topical absorption rates are not well-characterized, the compound's lipophilic nature suggests it could penetrate skin and potentially reach systemic circulation. The lack of safety data specifically for pregnant women combined with known reproductive effects in animal studies raises significant concerns. No regulatory body has specifically evaluated lapachol for use during pregnancy, but most obstetricians recommend avoiding ingredients with demonstrated reproductive toxicity in animal models when safer alternatives exist. Given the compound's biological activity and insufficient human safety data, a cautious approach is warranted.

Lapachol and breastfeeding

Not Recommended

• Passes into breast milk
• Infant exposure

Lapachol is a fat-soluble quinone compound, and such molecules can potentially transfer into breast milk when absorbed systemically through the skin. The compound's antimicrobial and cytotoxic properties, while beneficial in skincare, raise theoretical concerns about infant exposure through milk. There are no studies evaluating lapachol's transfer into human breast milk or its effects on breastfed infants. Given its lipophilic nature and biological activity demonstrated in laboratory studies, dermatologists generally recommend that breastfeeding mothers choose better-studied antioxidants with established safety profiles. While the risk may be theoretical due to topical application, the lack of safety data combined with the compound's known biological effects suggests caution. Most healthcare providers would recommend waiting until after weaning to use products containing this ingredient.

Lapachol and postpartum

Safe to Use

• Common allergen
• Irritant

For postpartum women who are not breastfeeding, lapachol presents primarily dermatological rather than systemic concerns. Its antioxidant properties may help with skin recovery and environmental stress protection during the postpartum period. The main considerations are potential skin sensitization and irritation, which can be more pronounced in postpartum skin that may already be sensitive due to hormonal changes. Patch testing is advisable before regular use, and products should be introduced gradually to monitor for any adverse reactions.

Lapachol and trying to conceive

Caution Advised

• Fertility effects
• Absorbed into the body

Lapachol has demonstrated anti-implantation effects in animal studies, raising theoretical concerns for women trying to conceive. While these studies involved systemic administration rather than topical application, the compound's lipophilic nature means some dermal absorption is possible. Given the significant investment and planning involved in trying to conceive, many women and their healthcare providers prefer to eliminate ingredients with any documented reproductive effects, even when the route of exposure differs from cosmetic use. The precautionary principle suggests choosing better-studied alternatives during the preconception period, typically starting 3 months before attempting pregnancy.

Lapachol and PCOS

Safe to Use

• Common allergen

Lapachol functions as an antioxidant and anti-inflammatory agent in cosmetic formulations, properties that can be beneficial for PCOS-related skin concerns such as inflammation and oxidative stress. There is no evidence that topical lapachol affects androgen levels or insulin sensitivity. Women with PCOS often experience increased oxidative stress and inflammation, which can manifest as acne and skin sensitivity. Lapachol's antioxidant properties may theoretically provide some benefit, though other better-studied antioxidants like niacinamide or green tea extract have more robust evidence for PCOS-related skin issues. The primary concern for women with PCOS is the same as for the general population: potential for allergic sensitization. There are no known interactions between lapachol and common PCOS treatments or concerns about hormonal interference when used topically.

Lapachol and general use

Safe to Use

• Common allergen
• Irritant

Lapachol is a naturally occurring antioxidant compound from lapacho tree bark, used in cosmetics for its free radical scavenging and antimicrobial properties. It belongs to the naphthoquinone family of compounds and has been studied for various biological activities. For the general population not concerned with pregnancy or breastfeeding, the primary considerations are dermatological. Lapachol can cause contact sensitization in some individuals, and like many quinone compounds, may cause mild to moderate irritation depending on concentration and individual sensitivity. People with sensitive skin or a history of plant-derived allergies should introduce products containing this ingredient cautiously. While lapachol is not restricted by major cosmetic regulatory bodies, its use remains relatively uncommon compared to mainstream antioxidants. The ingredient has a long history of traditional use in South American herbal medicine, but modern cosmetic applications are still developing a comprehensive safety profile. Patch testing is recommended before widespread facial application.

Everything else flagged for the same profiles

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

Related ingredients

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

• Niacinamide
• Resveratrol

Ingredients that raise the same concerns.

• Juniperus Mexicana OilFertility effects, Fetal development, Infant exposure
• ResorcinolFertility effects, Fetal development, Infant exposure
• Thuja Occidentalis Leaf ExtractFertility effects, Fetal development, Infant exposure
• Basic Violet 2Fertility effects, Fetal development, Infant exposure
• Xanthium Strumarium Fruit ExtractFertility effects, Fetal development, Infant exposure
• 1-NaphtholFertility effects, Fetal development, Infant exposure

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.