Ichthammol

Ichthammol and pregnancy

Caution Advised

• Absorbed into the body

Ichthammol is a petroleum-derived antimicrobial agent traditionally used in therapeutic ointments for skin conditions. It contains complex sulfur compounds and trace amounts of polycyclic aromatic hydrocarbons (PAHs) from its shale oil origin. While specific pregnancy studies are lacking, dermatologists generally exercise caution with petroleum derivatives during pregnancy due to theoretical concerns about PAH exposure and systemic absorption through compromised skin. The ingredient's complex chemical composition makes it difficult to assess developmental safety. There is no clear guidance from ACOG or FDA specifically addressing ichthammol in pregnancy. Most healthcare providers recommend avoiding non-essential petroleum-derived ingredients during pregnancy when safer alternatives exist. If therapeutic use is necessary (such as for boils or abscesses), brief, localized application under medical supervision is generally considered acceptable, but routine cosmetic use is best postponed.

Ichthammol and breastfeeding

Caution Advised

• Infant exposure

Ichthammol's petroleum-derived nature and sulfur compound content raise theoretical concerns about transfer through skin contact with breastfed infants. While systemic absorption through intact maternal skin is likely minimal, the ingredient's strong odor and dark color make accidental infant exposure through skin-to-skin contact possible. There is no published data on ichthammol transfer into breast milk or safety for breastfed infants. Dermatologists typically advise avoiding application to the breast area and ensuring thorough hand washing after use. The lack of modern safety studies for breastfeeding women, combined with the availability of better-studied alternatives, leads most healthcare providers to recommend caution. If therapeutic use is medically necessary, brief treatment of areas away from the breast (such as for a boil on the leg) with careful hygiene practices is generally considered acceptable. However, for routine antimicrobial or anti-inflammatory purposes, water-soluble alternatives with established breastfeeding safety profiles are preferred.

Ichthammol and postpartum

Safe to Use

For postpartum women who are not breastfeeding, ichthammol returns to its general therapeutic use profile. It can be effective for treating inflammatory skin conditions, boils, or minor infections that may occur during the postpartum period. The main considerations are individual skin sensitivity and the availability of more modern, better-tolerated alternatives. The ingredient's strong odor and staining properties may be undesirable, but there are no specific postpartum health concerns beyond general skin irritation potential.

Ichthammol and trying to conceive

Safe to Use

For women trying to conceive, ichthammol presents minimal concerns when used topically for therapeutic purposes. There is no evidence suggesting it affects fertility, ovulation, or hormone balance. The ingredient does not accumulate in tissues in clinically significant amounts with topical use. The primary consideration is that if conception occurs, you may want to discontinue use during pregnancy due to the limited safety data in that population. If you're using ichthammol therapeutically, discuss with your healthcare provider whether continuing treatment into early pregnancy would be advisable or whether you should switch to a pregnancy-safe alternative before attempting conception.

Ichthammol and PCOS

Safe to Use

Ichthammol has antimicrobial and anti-inflammatory properties that can be beneficial for treating inflammatory acne lesions, which are common in PCOS due to androgen excess. It has historically been used as a drawing agent for deep cystic acne and boils. There is no evidence that ichthammol affects hormone levels or insulin sensitivity. The ingredient does not contain phytoestrogens or androgen-mimetic compounds, making it hormonally neutral for women with PCOS. For PCOS-related acne, ichthammol can be used as a spot treatment for individual inflamed lesions or cysts. However, more modern and cosmetically elegant alternatives with better evidence for acne treatment (such as benzoyl peroxide, salicylic acid, or niacinamide) are typically preferred for routine use.

Ichthammol and general use

Safe to Use

• Irritant
• Common allergen

Ichthammol is a traditional antimicrobial and anti-inflammatory ingredient used primarily in therapeutic ointments for conditions like eczema, boils, psoriasis, and as a drawing agent for splinters and ingrown hairs. Its sulfur content contributes to its keratolytic and antimicrobial properties. The main concerns for general use are skin irritation and potential allergic reactions, particularly with prolonged use or application to sensitive skin. Some individuals may experience contact dermatitis. The ingredient has a distinctive strong odor and dark brown-black color that stains fabric, limiting its cosmetic appeal. While it contains trace PAHs from its petroleum origin, topical use at therapeutic concentrations has a long history without significant systemic toxicity reports. Ichthammol is approved for over-the-counter therapeutic use in concentrations typically ranging from 10-20% in ointment bases. It's most appropriate for short-term treatment of specific inflammatory skin conditions rather than routine cosmetic use. Patch testing is advisable before widespread application, especially for individuals with sensitive skin or a history of petroleum product reactions.

Everything else flagged for the same profiles

• Flagged in pregnancy
• Flagged in breastfeeding

Related ingredients

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

• Zinc Oxide

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.