Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and pregnancy

Caution Advised

• Absorbed into the body
• Hormone disruptor

This ingredient is a crosslinked polymer film-former derived from phthalic anhydride (a phthalate precursor), glycidyl neodecanoate, and trimethylolpropane. It's used in cosmetics to create long-lasting, water-resistant films on skin and nails. The concern stems from its phthalic anhydride component. While phthalates are known endocrine disruptors during pregnancy, this ingredient is a bound polymer rather than a free phthalate. However, the potential for residual monomers or polymer breakdown is unknown. ACOG recommends pregnant women minimize exposure to phthalates due to associations with preterm birth and developmental effects. The crosspolymer form reduces but may not eliminate these concerns. No specific regulatory guidance exists for this crosspolymer, but the FDA and ACOG advise limiting phthalate exposure during pregnancy. Given the lack of pregnancy-specific safety data and the theoretical concern about phthalate-related structure, many healthcare providers recommend choosing products without phthalic acid derivatives when alternatives exist. The actual risk is likely lower than free phthalates but cannot be definitively assessed without more data.

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and breastfeeding

Safe to Use

This crosslinked polymer forms films on skin surfaces and is used primarily in nail products and long-wear cosmetics. As a high-molecular-weight polymer, it has minimal ability to penetrate intact skin. While the ingredient contains phthalic anhydride as a structural component, the crosspolymer form significantly reduces systemic availability. Topical polymers generally remain on the skin surface and do not enter breast milk. Studies on phthalate exposure from cosmetics show minimal transfer to breast milk from topical products, and crosspolymers are even less bioavailable than free phthalates. No specific warnings exist for breastfeeding women using products with crosspolymers. The primary exposure concern with phthalates is through ingestion or inhalation rather than dermal absorption of polymer films. Standard cosmetic use poses minimal risk to breastfed infants.

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and postpartum

Safe to Use

This film-forming polymer can be used in cosmetics without specific postpartum concerns when not breastfeeding. It functions as a texture modifier and long-wear enhancer in various products. Without pregnancy or breastfeeding considerations, the main concerns are limited to potential skin irritation or sensitization, which are relatively minor and individual-specific. The polymer form reduces phthalate-related concerns that are more relevant during pregnancy.

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and trying to conceive

Caution Advised

• Hormone disruptor

Phthalate exposure has been associated with reduced fertility in some studies, raising concerns about ingredients containing phthalic acid derivatives. While this crosspolymer is less bioavailable than free phthalates, women trying to conceive may wish to minimize exposure to phthalate-related compounds. The crosspolymer structure significantly reduces the likelihood of systemic absorption compared to free phthalates. However, without specific fertility studies on this ingredient, and given the known effects of phthalates on reproductive hormones, a cautious approach may be warranted for those actively trying to conceive.

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and PCOS

Caution Advised

• Hormone disruptor

This polymer contains phthalic anhydride as a structural component. Phthalates are known environmental endocrine disruptors that can interfere with hormone signaling, which is particularly relevant for individuals with PCOS. While crosspolymer forms are less bioavailable than free phthalates, individuals with PCOS often have underlying hormonal sensitivities. Studies suggest phthalate exposure may worsen insulin resistance and androgen levels, both key factors in PCOS. Although topical absorption of this polymer is likely minimal, some experts recommend that those with hormone-sensitive conditions minimize exposure to phthalate-derived ingredients. No definitive evidence links this specific crosspolymer to PCOS symptom worsening, but the theoretical concern exists due to the phthalic component. Many individuals with PCOS choose to avoid phthalate-related ingredients as a precautionary measure, though the actual risk from this polymer form is likely low.

Glycidyl Neodecanoate/Phthalic Anhydride/TMP Crosspolymer and general use

Safe to Use

• Irritant

This ingredient functions as a film-forming crosspolymer in cosmetics, providing long-lasting wear and water resistance, particularly in nail products and long-wear makeup formulations. The main concerns for general use are potential skin irritation or allergic reactions, which can occur with complex polymers. While the ingredient contains phthalic anhydride as a building block, the crosspolymer form significantly reduces bioavailability compared to free phthalates. Individuals with sensitive skin may experience irritation. The ingredient is permitted in cosmetics by the FDA and EU regulations. While the safety profile of this specific crosspolymer is not extensively documented, film-forming polymers generally have good safety records. The phthalate-related concerns are primarily relevant to pregnancy, fertility, and hormone-sensitive conditions rather than general adult use.

Everything else flagged for the same profiles

• Flagged in pregnancy
• Flagged in trying to conceive
• Flagged in PCOS

Related ingredients

Ingredients that raise the same concerns.

• Parfum/FragranceHormone disruptor, Irritant, Absorbed into the body
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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.