POLYALKYLAMINOESTER-1 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

POLYALKYLAMINOESTER-1

Safety grade: A

This is a synthetic polymer, which is a chain-like molecule made in a laboratory that contains amino acids and ester groups. It works like a flexible, lightweight film that helps hold your hair in place.

This ingredient is used in hair products to create a protective coating on hair strands that provides flexible hold and helps style last longer without making hair stiff or flaky.

Graded using: COSING.

Last verified: May 26, 2026