Ingredient
Bis-Trimethylbenzoyl Phenylphosphine Oxide
Bis-Trimethylbenzoyl Phenylphosphine Oxide is flagged for pregnancy, trying to conceive and general use. The concern behind the strongest flag is absorbed into the body.
- BAPO
- Bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide
Verdict by profile
Truva checks every ingredient against six profiles. Jump to any of them for the full assessment.
- Strongest verdict
- Caution Advised
- Its verdict for pregnancy, the profile this one is worst in
- Profiles flagged
- 3 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 2 of 5
- Higher means more likely to sting or redden
Bis-Trimethylbenzoyl Phenylphosphine Oxide and pregnancy
Caution Advised
- Absorbed into the body
This is a photoinitiator compound used primarily in UV-cured nail products and certain cosmetic formulations. Photoinitiators work by triggering polymerization reactions when exposed to UV or visible light, helping products cure or harden. Specific pregnancy safety data for this photoinitiator is limited. However, photoinitiators as a class have raised concerns due to their potential for systemic absorption and reactive nature. The SCCS has noted that photoinitiators can penetrate skin, particularly before products are fully cured. Some animal studies on photoinitiators have shown potential reproductive effects at high doses, though human data is lacking. The reactive oxygen species generated during photoinitiation may also pose theoretical concerns during pregnancy when applied topically. While there is no explicit prohibition from ACOG regarding this specific ingredient, the limited safety data combined with concerns about photoinitiator absorption and reactivity warrant a cautious approach. Many dermatologists recommend pregnant women minimize exposure to uncured UV nail products. If this ingredient appears in rinse-off products or fully cured formulations, exposure is likely minimal.
Bis-Trimethylbenzoyl Phenylphosphine Oxide and breastfeeding
Safe to Use
This photoinitiator is used primarily in UV-cured nail products. It initiates polymerization reactions when exposed to UV light, helping products harden or set. While specific breastfeeding safety data is not available, the concerns with photoinitiators primarily relate to skin contact with uncured products and photosensitivity reactions. Once products containing photoinitiators are fully cured (as with gel manicures), the compound is locked in the polymer matrix with minimal release. For topical cosmetic use, systemic absorption would be limited and unlikely to affect breast milk in meaningful amounts. The AAD does not specifically restrict photoinitiators during breastfeeding. While the safety profile of photoinitiators has some concerns for direct skin exposure, the risk to breastfed infants appears low given the topical route and limited absorption. Minimizing direct skin contact with uncured products and ensuring full curing can further reduce any theoretical risks.
Bis-Trimethylbenzoyl Phenylphosphine Oxide and postpartum
Safe to Use
- Increases sun sensitivity
This photoinitiator is commonly found in UV-cured nail products. For postpartum women not breastfeeding, the primary concern is photosensitivity and potential skin irritation rather than systemic effects. Photoinitiators can cause photosensitivity reactions and contact dermatitis in some individuals. Postpartum skin may be more reactive due to hormonal changes, making photosensitizing ingredients worth monitoring. However, fully cured products pose minimal risk as the photoinitiator becomes trapped in the polymer matrix.
Bis-Trimethylbenzoyl Phenylphosphine Oxide and trying to conceive
Caution Advised
This photoinitiator is used in UV-cured nail products and certain cosmetics. Limited data exists regarding fertility effects, but some photoinitiators have shown reproductive effects in animal studies at high doses. As a precautionary measure, women trying to conceive may choose to minimize exposure to photoinitiators, particularly uncured products with potential for skin absorption. Once pregnancy is confirmed, more caution is warranted, so reducing exposure during the TTC phase creates a safety margin. However, the risk from occasional use of fully cured products like gel manicures is likely minimal.
Bis-Trimethylbenzoyl Phenylphosphine Oxide and PCOS
Safe to Use
This photoinitiator is used in UV-cured cosmetic products, primarily nail treatments. It has no known hormonal activity or interaction with androgen metabolism. For women with PCOS, this ingredient presents no specific hormonal concerns. It does not affect insulin sensitivity, androgen levels, or sebum production. The compound's role is strictly functional in polymerization reactions. While photoinitiators can cause photosensitivity or irritation in some users, they do not interact with PCOS-related hormonal or metabolic pathways. This ingredient is neutral for PCOS management.
Bis-Trimethylbenzoyl Phenylphosphine Oxide and general use
Caution Advised
- Increases sun sensitivity
This photoinitiator is used primarily in UV-cured nail products and certain cosmetic formulations. When exposed to UV or visible light, it triggers polymerization reactions that help products cure or harden. The main concerns with this ingredient relate to photosensitivity and skin sensitization. The SCCS has evaluated photoinitiators and noted potential for photoallergic reactions and contact dermatitis. These compounds can generate reactive oxygen species when exposed to light, potentially causing skin irritation. Direct contact with uncured products should be minimized, and adequate curing is essential to trap the photoinitiator in the polymer matrix. In the EU, this ingredient is restricted under Annex III of the Cosmetics Regulation for use in nail products only, with maximum concentration limits. The SCCS has expressed concerns about photoinitiators' safety profiles. For consumers, choosing properly applied gel manicures with adequate UV curing and avoiding skin contact with uncured product can minimize risks. Individuals with sensitive skin or history of photosensitivity may want to avoid products containing photoinitiators.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of Bis-Trimethylbenzoyl Phenylphosphine Oxide, 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 .
One ingredient is the easy case.
A label has thirty of them. Truva reads the whole list at once and answers for the profile you set: pregnancy, breastfeeding, postpartum, trying to conceive, PCOS, or general use.
Download on theApp Store