Loreal Elvive Fibrology Thickening Shampoo for thicker hair penetrates and instantly expands hair. Gives 80% more body and bounce. What if science could give you thicker hair than nature did? A breakthrough in the science of hair, LOreal Laboratories have created our 1st haircare range proven to give thicker hair wash after wash. Specially developed with Filloxane, the shampoo formula together with the conditioner, thickens the hair fibres and provides deep cleansing. Instrumental tests on sensitised hair with shampoo and conditioner.