A smallish polymer molecule (created from repeated units of Polyethylene glycol, aka PEG) that's used as a solubilizer and viscosity control agent.

It is a clear, colorless liquid that is water-soluble and water-binding (aka humectant) and can help to solubilize sparingly-water soluble things (e.g. vanilla, perfumes) into water-based formulas. Thanks to its water-binding ability, it also prevents the drying out of formulas, especially when combined with the fellow hygroscopic agent, sorbitol

Products with Peg-8

Erno Laszlo White Marble Dual Phase Vitamin C Peel DECLÉOR Aroma Solutions Prolagene Gel Dermosil Glowing Facial Serum Hada Labo Gokujyn Hyaluronic Acid Cleansing Foam Meishoku Detclear Bright & Peel Hot Cleansing Gel Cream Shiseido Senka Perfect Gel Morning Protect Spf50+ Pa++++ Vichy Purete Thermale Perfecting Toner Dr. Jart+ Water Fuse Hydro Soothe Eye Gel La Roche-Posay Effaclar Purifying Foaming Gel Missha Misa Cho Gong Jin Ampoule Nature Republic Real Nature Honey Ampoule Neutrogena Microdermabrasion Pads Nivea Daily Essentials: Shine Control Toner Orion Pharma Aqualan Plus Paula's Choice Resist Bha 9 RoC Retinol Correxion Sensitive Night Cream Shiseido Ibuki Gentle Cleanser The Face Shop Mango Seed Cleansing Foam The Face Shop Rice Water Bright Cleansing Cream Vichy Normaderm Deep Cleansing Purifying Gel Cle Melting Cleanser May Coop Raw Sauce Skinfood Egg White Pore Hot Steam Pack Thefaceshop Mild Papaya Peeling Beauty Pie Über Youth Re-Elastic Concentrate Serum Dermalogica Intensive Moisture Balance Lancôme Crème Radiance M&S Formula Day Cream Sensitive Skin Matas Glycerin Håndcreme (Hand Cream) Shiseido Ibuki Softening Concentrate Beauty Pie Lumiboost Spot Brightening Serum Dermalogica Skin Smoothing Cream LEEGEEHAAM Cleansing Foam Pixi Retinol Tonic Simple Water Boost Hydrating Booster Simple Water Boost Hydrating Gel Cream Face Moisturizer Answer from Black Volume Gold Radiance Cream Beauty Pie Fruitizyme™ Five Minute Facial Dermalogica Overnight Retinol Repair Buffer Cream Dr.G Actifirm Real Lifting Emulsion GLAMGLOW Thirstymud™ Hydrating Treatment ISDIN Fusion Water Color Spf50 ISDIN Fusion Water Spf 50+ Pur Cosmetics Cc Cream Clinique Moisture Surge™ Overnight Mask Cosmetea Dust Out Tea Cleanser ~ White Tea & Lemon Nu Skin Ageloc Lumispa Cleanser (Normal/Combo) Paula's Choice Extra Care Non-Greasy Sunscreen Spf 50 Skin + Pharmacy Advanced Acne Therapy Overnight Salicylic Acid Lotion Neutrogena Sensitive Skin Sunscreen Lotion Broad Spectrum Spf 60+