Preservatives

Quaternium-15

Banned in European Union and United Kingdom; its status in Nigeria is not confirmed.

Why it matters

It releases formaldehyde, causes contact allergy, and the EU banned it under its CMR (carcinogen) rules.

What to look for on the label

Quaternium-15.

Country by country

Around the worldBanned in European Union and United Kingdom; its status in Nigeria is not confirmed.

Why: It releases formaldehyde, causes contact allergy, and the EU banned it under its CMR (carcinogen) rules.

How Quaternium-15 is treated in Nigeria and other markets
PlaceStatus
Nigerianot confirmed
European UnionbannedAnnex II/1385-1386 (cis-CTAC); Annex V/31 deleted (Reg 2019/831).
United KingdombannedAnnex II/1385-1386 under Reg 2019/831 as kept in UK law.
United Statesno specific ruleNot on FDA prohibited/restricted ingredients list.
Canadano specific ruleNot found on Hotlist prohibited (A-T) or restricted tables.

More about Quaternium-15

Sources: EU Reg 2019/831 (Publications Office) · legislation.gov.uk Reg 2019/831 (UK version) · 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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