Ingredient
Bumetrizole
Bumetrizole is flagged for pregnancy, trying to conceive, PCOS, breastfeeding, postpartum and general use. The concern behind the strongest flag is hormone disruptor and absorbed into the body.
- Tinuvin P
- Benzotriazole UV Absorber
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
Bumetrizole and pregnancy
Not Recommended
- Hormone disruptor
- Absorbed into the body
Bumetrizole is a benzotriazole-type UV absorber used to stabilize cosmetic formulations and occasionally as a UV filter. It prevents product degradation from sunlight exposure and can provide some UV protection. Research has raised concerns about benzotriazole UV absorbers and their potential for endocrine disruption. According to ECHA assessments, these compounds may interfere with hormone signaling, which is particularly concerning during pregnancy when hormonal balance is critical for fetal development. Studies show that benzotriazole derivatives can be absorbed through the skin and detected in biological samples. While specific human pregnancy studies are limited, the mechanism of potential hormone disruption makes many obstetricians and dermatologists recommend caution. The SCCS has evaluated benzotriazole UV absorbers and noted concerns about their safety profile. Most pregnancy-focused dermatologists recommend avoiding benzotriazole-based UV filters during pregnancy and choosing mineral sunscreens or other well-studied organic filters instead.
Bumetrizole and breastfeeding
Caution Advised
- Passes into breast milk
Bumetrizole is a UV-absorbing chemical that can be found in sunscreens and product stabilizers. It belongs to the benzotriazole family of UV filters. Benzotriazole compounds have been detected in environmental and biological samples, indicating they can be absorbed systemically. While specific studies on breast milk transfer are limited, the fat-soluble nature of these UV filters suggests potential for accumulation and transfer. The AAD notes that data on benzotriazole UV absorbers in breastfeeding is insufficient, leading many dermatologists to recommend alternative UV protection methods. Given the concerns about endocrine disruption and limited safety data for breastfeeding mothers, many healthcare providers suggest using mineral-based sunscreens or better-studied organic filters during breastfeeding.
Bumetrizole and postpartum
Caution Advised
- Hormone disruptor
For postpartum women not breastfeeding, bumetrizole presents moderate concerns primarily related to its potential endocrine-disrupting properties. The ingredient can provide product stability and UV protection benefits. While the immediate concerns about infant exposure are removed when not breastfeeding, the potential hormonal effects remain relevant for postpartum women whose bodies are still recovering hormonal balance. Women with a history of hormonal issues may prefer to use alternative UV filters with better-established safety profiles.
Bumetrizole and trying to conceive
Not Recommended
- Hormone disruptor
- Fertility effects
When trying to conceive, hormonal balance is crucial for ovulation and implantation. Bumetrizole's potential endocrine-disrupting properties make it a concern for women TTC. While direct fertility studies are limited, the mechanism of potential hormone disruption is concerning during the preconception period. Many fertility specialists recommend minimizing exposure to suspected endocrine disruptors when trying to conceive, as optimal hormonal function is essential for conception success.
Bumetrizole and PCOS
Not Recommended
- Interferes with hormones
- Mimics androgens
Bumetrizole is a UV-absorbing chemical that has raised concerns about potential endocrine disruption. For women with PCOS, who already experience hormonal imbalances, this is particularly relevant. Studies on benzotriazole UV absorbers suggest they may interfere with hormone receptor activity and potentially affect androgen and estrogen signaling. According to research reviewed by ECHA, these compounds can disrupt endocrine function through multiple pathways. For women with PCOS who are managing hormone-sensitive conditions like irregular cycles, acne, and metabolic issues, adding a potential hormone disruptor is not ideal. Most endocrinologists and dermatologists treating PCOS recommend avoiding ingredients with suspected endocrine-disrupting properties when safer alternatives are available. Mineral sunscreens or well-studied organic filters are preferable choices.
Bumetrizole and general use
Caution Advised
- Endocrine disruptor
- Common allergen
Bumetrizole is used in cosmetics to protect products from UV degradation and occasionally as a UV filter. It helps maintain product stability and can provide some photoprotection. The ingredient has raised concerns among regulatory agencies about potential endocrine disruption and environmental effects. According to ECHA, benzotriazole UV absorbers may interfere with hormone systems, though human health impact studies are limited. Some individuals experience allergic or photoallergic reactions to benzotriazole compounds. The EU regulates this ingredient with concentration limits and requires ongoing safety monitoring. While not banned, the emerging evidence about endocrine effects has led many dermatologists to recommend alternative UV filters, particularly mineral sunscreens, for regular use.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of Bumetrizole, 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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