Ingredient
Ethylhexyl Dimethyl PABA
Ethylhexyl Dimethyl PABA is flagged for pregnancy, breastfeeding, trying to conceive, PCOS, postpartum and general use. The concern behind the strongest flag is endocrine disruptor and absorbed into the body.
- Octyl Dimethyl PABA
- Padimate O
- OD-PABA
Verdict by profile
Truva checks every ingredient against six profiles. Jump to any of them for the full assessment.
- Strongest verdict
- Not Recommended
- Its verdict for pregnancy, the profile this one is worst in
- Profiles flagged
- 6 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 2 of 5
- Higher means more likely to sting or redden
Ethylhexyl Dimethyl PABA and pregnancy
Not Recommended
- Endocrine disruptor
- Absorbed into the body
Ethylhexyl Dimethyl PABA (Padimate O) is a chemical sunscreen ingredient that absorbs UVB radiation. Unlike physical UV blockers, chemical filters like this one can be absorbed systemically through the skin. Studies have shown that Padimate O can be detected in blood, urine, and breast milk after topical application, indicating significant systemic absorption. Research has raised concerns about potential endocrine-disrupting properties, which could theoretically affect fetal development. While there are no definitive studies proving harm during pregnancy, the FDA has requested additional safety data for this ingredient specifically for pregnant women. Many obstetricians and dermatologists now recommend that pregnant women choose mineral sunscreens containing zinc oxide or titanium dioxide instead of chemical filters like Padimate O. The American Academy of Dermatology suggests erring on the side of caution with UV filters that have systemic absorption during pregnancy.
Ethylhexyl Dimethyl PABA and breastfeeding
Not Recommended
- Passes into breast milk
- Absorbed into the body
Padimate O has been specifically detected in breast milk in multiple studies, confirming that this UV filter can transfer from topical application through the bloodstream into milk. Research published in environmental health journals has found measurable levels of this chemical in breastfeeding mothers' breast milk, with concentrations correlating to sunscreen use. While the effects on breastfed infants are not fully understood, the presence of an endocrine-disrupting chemical in breast milk is concerning, particularly for vulnerable developing infants. The AAD and many pediatric dermatologists recommend that breastfeeding mothers choose mineral sunscreens instead of chemical filters that have documented milk transfer. Zinc oxide and titanium dioxide remain on the skin surface and do not enter breast milk.
Ethylhexyl Dimethyl PABA and postpartum
Caution Advised
- Endocrine disruptor
For women who are not breastfeeding postpartum, the main concern with Padimate O is the same as for the general population: potential endocrine disruption and systemic absorption. While there are no specific postpartum contraindications beyond breastfeeding, many women prefer to continue using mineral sunscreens after pregnancy due to ongoing concerns about chemical UV filter safety. The postpartum period is a time of hormonal rebalancing, and some women choose to minimize exposure to ingredients with potential endocrine effects.
Ethylhexyl Dimethyl PABA and trying to conceive
Not Recommended
- Endocrine disruptor
- Absorbed into the body
When trying to conceive, many fertility specialists recommend minimizing exposure to endocrine-disrupting chemicals. Padimate O's systemic absorption and potential hormonal effects make it a concerning choice during the preconception period. Since chemical UV filters with systemic absorption should be avoided during pregnancy, it's advisable to switch to mineral alternatives before conception. This ensures no exposure during early pregnancy when women may not yet know they are pregnant and when fetal development is most vulnerable.
Ethylhexyl Dimethyl PABA and PCOS
Not Recommended
- Endocrine disruptor
- Interferes with hormones
PCOS is a hormonal condition characterized by androgen excess and insulin resistance. Endocrine-disrupting chemicals like Padimate O may theoretically interfere with the delicate hormonal balance that women with PCOS are working to manage. While direct studies on Padimate O and PCOS are lacking, research on endocrine disruptors suggests they can affect reproductive hormones. For women already dealing with hormonal imbalances, minimizing exposure to ingredients with potential endocrine effects is a reasonable precautionary approach. Dermatologists treating PCOS patients often recommend mineral sunscreens as the safest choice, particularly since sun protection is important for managing PCOS-related skin concerns like acne and hyperpigmentation without introducing potential hormone disruptors.
Ethylhexyl Dimethyl PABA and general use
Caution Advised
- Endocrine disruptor
- Common allergen
Ethylhexyl Dimethyl PABA provides UVB protection but has become less popular due to accumulating safety concerns. The FDA has identified it as requiring additional safety data before it can be classified as 'generally recognized as safe and effective.' Research has shown systemic absorption, detection in urine after topical use, and potential for generating free radicals when exposed to UV light—which is problematic for a sunscreen ingredient. It can also cause allergic reactions and is more likely to cause contact dermatitis than newer UV filters. Many dermatologists now recommend choosing sunscreens with mineral filters (zinc oxide, titanium dioxide) or newer chemical filters that have better safety profiles. The EWG Skin Deep database rates Padimate O as moderate hazard, and consumer awareness has led many brands to reformulate without it.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of Ethylhexyl Dimethyl PABA, each one with its own page here.
Ingredients that raise the same concerns.
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 .
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