Transform fine, thinning hair with the L'Oréal Professionnel Serioxyl Duo. Combining a high performance hair treatment and volumising shampoo, you can expect fuller, denser locks with every use. The Set Contains: Serioxyl Denser Hair Treatment Formulated with StemoxydineTM, the first hair-revealing molecule and NeohesperidinTM that protects against oxidative stress to ensure it functions correctly, the serum helps you to achieve denser looking hair. With pipette application, the treatment is quick and accurate and has been proven to help you achieve more hair per cm2 in just three months. Serioxyl Shampoo for Natural Thinning Hair Containing innovative StemoxydinTM, NeohesperidinTM, GlucoboostTM, IncellTM and Intra-CylaneTM to create beautiful hair that looks thicker and denser, the clarifying shampoo cleanses and removes residue from the scalp and hair. As part of the Serioxyl densifying haircare programme, the lightweight shampoo helps towards giving you visibly thicker and fuller-looking hair.