Arachidonic Acid

Arachidonic Acid and pregnancy

Not Recommended

• Absorbed into the body
• Can inflame skin

Arachidonic acid is an omega-6 fatty acid that serves as a precursor to prostaglandins and other eicosanoids in the body. While it's naturally present in the diet and body tissues, supplemental or concentrated topical application during pregnancy requires consideration. According to research published in obstetric literature, arachidonic acid metabolism plays a role in labor initiation through prostaglandin production. Higher levels of arachidonic acid-derived prostaglandins, particularly in the third trimester, are associated with uterine contractions and cervical ripening. While dietary intake is normal and necessary, concentrated topical application may theoretically increase local prostaglandin production. Some obstetricians advise caution with concentrated omega-6 supplements in late pregnancy. Most prenatal care providers focus on dietary balance between omega-3 and omega-6 fatty acids rather than restricting topical cosmetic use. However, given the theoretical concern about prostaglandin production, particularly in the third trimester, some women choose to avoid products with concentrated arachidonic acid. Consultation with a healthcare provider is recommended.

Arachidonic Acid and breastfeeding

Safe to Use

Arachidonic acid is a naturally occurring fatty acid that is actually an important component of breast milk. It's essential for infant brain and eye development, and mothers naturally provide it through breast milk. Topical application of arachidonic acid in cosmetics involves minimal amounts that remain largely on the skin surface. Unlike during pregnancy where prostaglandin effects on the uterus are a concern, there are no known issues with topical use during breastfeeding. The amounts in cosmetics are far lower than dietary intake. The AAD and lactation consultants do not restrict the use of topical products containing arachidonic acid while breastfeeding. It can be safely used to support skin barrier repair postpartum.

Arachidonic Acid and postpartum

Safe to Use

Arachidonic acid supports skin barrier function and can aid in healing and repair, making it beneficial for postpartum skin recovery. It helps restore the skin's natural lipid barrier and promotes healing. There are no concerns for postpartum use when not breastfeeding. This ingredient can be particularly helpful for addressing skin barrier damage or dryness that may occur postpartum.

Arachidonic Acid and trying to conceive

Safe to Use

While concentrated arachidonic acid supplementation during pregnancy may raise theoretical concerns about prostaglandin production, topical cosmetic use when trying to conceive is not a significant concern. The amounts in cosmetics are minimal compared to dietary intake. Women trying to conceive can use topical products containing arachidonic acid. Once pregnancy is confirmed, switching to alternative emollients may be considered, particularly as the third trimester approaches.

Arachidonic Acid and PCOS

Safe to Use

• Can inflame skin

Arachidonic acid is an omega-6 fatty acid that can be converted into both pro-inflammatory and anti-inflammatory molecules in the body. While PCOS is associated with chronic low-grade inflammation, topical application in cosmetics is generally well-tolerated. Research suggests that the balance between omega-3 and omega-6 fatty acids matters more than absolute levels. Some studies indicate that women with PCOS may have altered fatty acid metabolism. However, topical cosmetic use involves minimal systemic exposure compared to dietary intake. For individuals with PCOS experiencing inflammatory acne or skin concerns, the effects of topical arachidonic acid are likely neutral to slightly beneficial for barrier repair. Dietary management of omega-6 intake is more relevant than avoiding topical cosmetic use.

Arachidonic Acid and general use

Safe to Use

• Can inflame skin

Arachidonic acid is a naturally occurring omega-6 fatty acid found in skin and cell membranes. In cosmetics, it functions as an emollient and helps support the skin's natural barrier function by replenishing lipids. While arachidonic acid is a precursor to inflammatory prostaglandins, this is part of normal skin physiology. The body tightly regulates the conversion of arachidonic acid to inflammatory mediators. Topical application in cosmetic concentrations generally supports skin health rather than causing inflammation. Some individuals with highly inflammatory skin conditions may prefer omega-3 rich ingredients. This ingredient is approved for cosmetic use and is considered safe for topical application. It's particularly useful in barrier repair formulations and for dry or compromised skin.

Everything else flagged for the same profiles

• Flagged in pregnancy

Related ingredients

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

• Squalane
• Hyaluronic Acid

Ingredients that raise the same concerns.

• Parfum/FragranceCan inflame skin, Absorbed into the body
• EugenolCan inflame skin, Absorbed into the body
• DMDM HydantoinCan inflame skin, Absorbed into the body
• Citrus Aurantium Bergamia Fruit OilCan inflame skin, Absorbed into the body
• Hydroxyisohexyl 3-Cyclohexene CarboxaldehydeCan inflame skin, Absorbed into the body
• TriclosanCan inflame skin, Absorbed into the body

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.