| QUESTIONS | ANSWERS |
|---|---|
| What is this chemical? | Diazolidinyl urea is a fine white powder chemically related to imidazolidinyl urea. |
| What is its purpose? | Diazolidinyl urea is a fine white powder which is used as an antimicrobial preservative in cosmetics. Diazolidinyl urea is used as a formaldehyde-releasing preservative in cosmetics and barrier creams. |
| Where is it found? |
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HEALTH CONCERNS Is this chemical a carcinogen? Diazolidinyl urea is a formaldehyde-releasing chemical, a carcinogenic chemical which is toxic by inhalation, a strong skin irritant and sensitizer as well as a suspected human carcinogen (known rodent carcinogen). How can it affect me? Diazolidinyl urea has been established as a primary cause of contact dermatitis (American Academy of Dermatology).The CIR Expert Panel evaluated the scientific data and concluded that diazolidinyl urea was safe as a cosmetic ingredient up to a maximum concentration of 0.5%. The CIR Expert Panel noted that diazolidinyl urea was relatively non-toxic in oral sub-chronic studies. At 5%, diazolidinyl urea was not an ocular or skin irritant. At concentrations up to 0.4%, diazolidinyl urea was a mild cumulative skin irritant in humans.
The CIR report noted that diazolidinyl urea is a formaldehyde releaser. The CIR Expert Panel previously concluded that the use of formaldehyde in cosmetics and personal care products was safe to the great majority of consumers.
The CIR Expert Panel concluded that there was no indication that the use of diazolidinyl urea in cosmetics and personal care products would release formaldehyde at concentrations which would exceed their previous recommended limits for formaldehyde (0.2%).
Other names for diazolidinyl urea are:
- Germall 11;
- Imidazolidinyl urea 11
- N-(1,3-Bis(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl)-N,N’-bis(hydroxymethyl)urea
- N-(Hydroxymethyl)-N-(1,3-dihydroxymethyl-2,5-dioxo-4-imidazolidinyl)-N’-(hydroxymethyl) urea
- 1-(1,3-Bis(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)-1,3-bis(hydroxymethyl)urea
- Urea, N-(1,3-bis(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl)-
- N,N’-bis(hydroxymethyl)-
Diazolidinyl urea is a formaldehyde releaser; therefore, for those highly allergic to formaldehydes and their releasers, please read our article on Formaldehyde and Formaldehyde Releasers.
Are there controversial issues? No.
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