Diazolidinyl Urea
Diazolidinyl Urea is a cosmetic ingredient used as a preservative agent. It is used in 335 products in our dataset. It is regulated in the EU (listed in a Cosmetics Regulation annex). PubMed carries 65 studies of its skin or topical use.
| INCI name | DIAZOLIDINYL UREA |
| Function | PRESERVATIVE |
| CAS number | 78491-02-8 |
| EC number | 278-928-2 |
| Prevalence | 335 products (0.36% of dataset) |
| Most used in | Skincare |
| EU status | Restricted (annex ) |
| Scientific studies | 65 on PubMed (skin/cosmetic/topical) |
| Monthly searches | 1,300 |
Used in
Face Cleansers 13.1%General Moisturizers 10.7%Serums 7.5%Wash Off Masks 5.7%Body Lotions 4.2%Mousse & Foam 4.2%
Frequently asked
- What does Diazolidinyl Urea do in skincare?
- Diazolidinyl Urea functions as a preservative agent in cosmetic formulas.
- Is Diazolidinyl Urea allowed in cosmetics?
- Yes, but it is regulated in the EU — it appears in a Cosmetics Regulation annex with usage conditions.
- What products contain Diazolidinyl Urea?
- It is most commonly found in Skincare products, especially face cleansers (13.1% of its uses).
Manufacturers with experience using Diazolidinyl Urea
Match with vetted US contract manufacturers that have hands-on experience formulating with this ingredient.