Quaternium-15

Quaternium-15 is a preservative ingredient. It’s in 6 products on Poliage, most often mascara. Avoid lists on Poliage that include it: Formaldehyde releasers.

Updated October 21, 2026

What it does

Contains Quaternium-15: preservative
Function listed in CosIng

Source: CosIng, the European Commission cosmetic ingredient database, ref 37406, accessed October 22, 2026.

Products that contain Quaternium-15

Related guides