Quaternium-15
Avoid
Official INCI name
A formaldehyde-releasing preservative, banned in cosmetics in the EU.
What it does
Preservative. Stops bacteria, yeast and mould growing in the product.
Worth knowing
A preservative that slowly releases formaldehyde, a known sensitizer and carcinogen.
Can cause contact allergy that, once developed, returns on every exposure.
“Quaternium-15” is its name in the EU glossary of common ingredient names (no. 23836), the names labels in the EU must use. © European Union, EUR-Lex.