Preservatives
DMDM hydantoin
Restricted in European Union and United Kingdom; its status in Nigeria is not confirmed.
Why it matters
It releases formaldehyde, which can cause allergic skin reactions and is a carcinogen.
What to look for on the label
DMDM hydantoin.
Country by country
Around the worldRestricted in European Union and United Kingdom; its status in Nigeria is not confirmed.
Why: It releases formaldehyde, which can cause allergic skin reactions and is a carcinogen.
| Place | Status |
|---|---|
| Nigeria | not confirmed |
| European Union | restrictedAnnex V/33: max 0.6%. 'Releases formaldehyde' label above 0.001% (Reg 2022/1181). |
| United Kingdom | restrictedAnnex V/33: max 0.6%. 'Releases formaldehyde' label above 0.001% (amended 15 Jul 2026). |
| United States | no specific ruleNot on FDA prohibited/restricted ingredients list. |
| Canada | no specific ruleNot found on Hotlist prohibited or restricted tables. |
Sources: Reg 1223/2009 Annex V as adopted + Reg 2022/1181 · legislation.gov.uk UK Annex V (revised) · FDA Prohibited & Restricted Ingredients · Health Canada Hotlist. Checked 2026-10-19; rules change, so check the regulator before relying on it.
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Education, not legal advice. Rules change: check with your country's regulator before relying on this.