Polyquaternium-72 is a cationic styling agent which imparts hold by coating hair fibers with a flexible film that provides curl memory benefits. It has been proven to hold high-energy, frizz-free curls for longer, whatever the humidity is. Polyquaternium-72 improves hair flexibility which means, styles are moveable and more natural and curls are  soft and non-crispy with touchable hold.