Octinoxate (Octyl Methoxycinnamate)
octinoxate · octyl methoxycinnamate · omc
Chemical UV-B filter that penetrates the skin and may disrupt thyroid and estrogen pathways. Banned in Hawaii and Palau due to coral reef toxicity.
- Verdict
- Avoid
02Concerns
- Endocrine disruption — estrogenic and thyroid-disrupting activity in animal studies
- Detected in blood, urine, and breast milk (FDA 2019)
- Coral reef toxicity — Hawaii banned it in 2021
- Photodegrades into potentially more toxic compounds
03Regulatory flags
- Hawaii banned in sunscreen (2021) — coral reef damage
- Palau banned (2019)
- EU restricts to max 7.5% in sunscreen
04Commonly found in
Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.
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Thinksport
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The cleanest mineral sunscreen we've found. Zero hormone disruptors.
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No flagged ingredients in our current review; key ingredients include Zinc oxide 20%, Sunflower seed oil, Shea butter.
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Pipette Mineral SPF 50
Sheer mineral SPF designed for sensitive skin.
Why it's cleaner
No flagged ingredients in our current review; key ingredients include Zinc oxide 20%, Squalane, Bisabolol.
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