Other ingredient

Polyquaternium-51

A synthetic phosphorylcholine-based copolymer that mimics cell membrane phospholipids, used to form a protective, moisture-retaining film on skin in serums and masks.

Also known as: pmb, phospholipid polymer

film-formerhumectant

Benefits

  • Forms a cell-membrane-mimetic film that retains moisture and reduces TEWL
  • Long-lasting hydration without stickiness
  • Suppresses irritation from surfactants
  • Well-tolerated by sensitive skin

No known watch-fors.

At a glance
CategoryOther
IrritancyLow
Beginner-friendlyYes
Pregnancy safeYes
In your routine

Generally well-tolerated and easy to layer.

Found in 28 products
View all products →

Products with Polyquaternium-51

Concentrated Ginseng Renewing Cream EXMoisturizer
Sulwhasoo
Concentrated Ginseng Renewing Cream EX
The 6 Peptide Skin Booster SerumSerum
COSRX
The 6 Peptide Skin Booster Serum
Triple Retinol Repair SerumSerum
Some By Mi
Triple Retinol Repair Serum
Hyaluronic Acid Water EssenceEssence
Isntree
Hyaluronic Acid Water Essence
Good Cera Super Ceramide CreamMoisturizer
Holika Holika
Good Cera Super Ceramide Cream
Moisturizer
Dr. Althea
Azulene 147HA Intensive Soothing Cream