Fine or thin hair? Discover our Thickening Shampoo to increase the diameter of every hair fibre for instantly thicker hair*. Elvive Fibrology is powered with [Filloxane], a L'Oréal-developed thickening agent, which penetrates and expands the hair fibre from within*.The result? Hair that appears and feels thicker from the very first use.What makes it effective? Fine or thin hair can often feel limp and lacking in volume. Elvive Fibrology Thickening Shampoo, formulated with [Filloxane], works by penetrating the hair fibre to create a thickening effect from the inside out. This helps create the appearance of thicker, fuller hair with each wash.Suitable for all hair types and textures, whether your hair is straight, wavy, curly, or coily.*Instrumental test after 5 application.