Polyquaternium-51

  • Polyquaternium-51

    Polyquaternium-51

    Polyquaternium-51 is a biocompatible copolymer that has the same structure as important cell membrane ingredient, phospholipid. It’s a good skin moisturizer, leaves a silky, smooth feel on the skin and can help to reduce irritation caused by some not-so-nice ingredients.