Ingredient deep-dive
Diazolidinyl Urea: Is It a Microplastic?
The name Diazolidinyl Urea alone does not establish whether the finished product contains synthetic polymer microparticles. This entry's individual source review is pending.
Shared method updated .
What changed in this reference
Earlier pages inferred a yes/no microplastic verdict from an editorial high/medium/low grouping. Those labels were not measurements or health-risk grades. The shared answer, FAQ and regulation context now distinguish label names from physical particles. This entry’s earlier ingredient-specific claims are retained below for review, not offered as verified findings.
Earlier description awaiting individual source review
Another formaldehyde-releasing preservative, generally releasing more formaldehyde than imidazolidinyl urea. Not a plastic.
How the rules depend on the product
European Union
The EU restriction depends on polymer and particle criteria, exclusions and use. Abrasive microbeads have no transition after 17 October 2023. Otherwise, covered rinse-off cosmetics generally transition on 17 October 2027, other leave-on cosmetics on 17 October 2029, and make-up, lip and nail products on 17 October 2035. Microbeads, fragrance encapsulation and rinse-off uses have specific exceptions to those groupings. A name alone cannot establish compliance.
United States
The federal Microbead-Free Waters Act targets intentionally added solid plastic microbeads in rinse-off cosmetics for exfoliating or cleansing. It is not a blanket ban on all polymers or a product safety assessment. Other applicable rules require separate checking.
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Diazolidinyl Urea, common questions
Is Diazolidinyl Urea a microplastic?
Does a label match mean Diazolidinyl Urea is banned?
Can a label show the particle count or health effect?
Sources and review scope
The Commission guide establishes the shared definition and transition context; CosIng inclusion is not ingredient approval. Label rules do not provide a particle assay. The shared sources do not verify every claim in the earlier description; individual review remains pending.
Related ingredients
Quaternium-15
Other chemical names
The name Quaternium-15 alone does not establish whether the finished product contains synthetic polymer microparticles. This entry's individual source review is pending.
Read moreImidazolidinyl Urea
Other chemical names
The name Imidazolidinyl Urea alone does not establish whether the finished product contains synthetic polymer microparticles. This entry's individual source review is pending.
Read morePerfluorodecalin
Other chemical names
The name Perfluorodecalin alone does not establish whether the finished product contains synthetic polymer microparticles. This entry's individual source review is pending.
Read moreDMDM Hydantoin
Other chemical names
The name DMDM Hydantoin alone does not establish whether the finished product contains synthetic polymer microparticles. This entry's individual source review is pending.
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