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What-it-does: moisturizer/humectant


A biocompatible copolymer (a big molecule that consists of more than one type of building blocks) 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 (like surfactants).

Products with Polyquaternium-51

KLAVUU Sensitive Care Sea Silt Repair Toner Lululun Daily Facial Mask Extra Moisturizing Missha Time Revolution First Treatment Essence Intensive Tony moly The Black Tea London Classic Serum Botanic Farm Rice Ferment First Essence LEEGEEHAAM Peeling Gel Klairs Rich Moist Soothing Serum Purid Refreshing Brightening Serum Huxley Secret Of Sahara Oil Essence; Essence-Like, Oil-Like Klairs Supple Preparation Facial Toner Klairs Supple Preparation Toner Unscented Missha Time Revolution The First Treatment Essence Intensive [Moist] LEEGEEHAAM Grow Hyal B5 Ampoule e.l.f. Hydrating Water Essence Muji Light Toning Water - High Moisture Muji Moisturizing Milk Moisture Muji Sensitive Skin Sheet Mask Holika Holika Good Cera Super Ceramide Toner LEEGEEHAAM Grow Tea Tree 70 Spot Muji Sheet Mask Doctor Babor Rose Toning Essence NYDG Ultra-Light Hydra-Gel Klairs Rich Moist Soothing Cream Clinique Foaming Sonic Facial Soap Kenzoki Melt-In Moisturizing Lotion Klairs Supple Preparation All-Over Lotion Nature Republic Soothing & Moisture Aloe Vera 92% Soothing Gel Mist Verso Deep Hydration Mask Althea Real Fresh Skin Detoxer: Rose Hada Labo Gokujyun Premium Hyaluronic Acid Lotion IOPE Whitegen Eye Serum Bioderma Atoderm Hand Cream Bobby Brown Extra Treatment Lotion Frudia Citrus Brightening Serum Hada Labo Air Aqua Uv - Fresh Spf 50/ Pa+++ Smashbox Camera Ready Bb Cream Spf 35 Huxley Secret Of Sahara Cream; More Than Moist LEEGEEHAAM Hyal B5 Toner Missha Misa Cho Gong Jin Toner Muji Sunscreen Spf27 Pa++ SkinMedica Glypro Antioxidant Serum Muji Aging Care Sheet Mask Peter Thomas Roth Water Drench Hyaluronic Cloud Serum Rohto Skin Aqua Uv Mild Gel Spf 30 Pa+++ Too Faced Hangover 3-In-1 Replenishing Primer & Setting Spray Chanel Blue Serum I'm From Magnolia Wake Essence Private Doctor Minus Serum Uriage BariƩsun Ultra-Light Fluid Spf50+ Clinique Liquid Facial Soap