LabelWise

Polyaminopropyl Biguanide

PHMB

Preservative

Polyaminopropyl Biguanide is a special ingredient that helps stop germs like bacteria and mold from growing in products. You might find it in things like wet wipes, contact lens solutions, and some cosmetics to keep them fresh and safe to use.

Moderate Concern

Source: ECHA (European Chemicals Agency)

While effective at preventing germ growth, it is classified by some regulatory bodies as a suspected carcinogen via inhalation and can cause skin irritation or sensitization in some individuals.

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Last updated: May 16, 2026