Tame frizz and unlock mirror-like shine with the L'Oréal Professionnel Liss Unlimited Smoother Serum. This professional-grade finishing oil is the ultimate solution for rebellious, frizzy, or straightened hair. Infused with a powerful blend of Pro-Keratin and nourishing oils, this lightweight serum creates a protective shield against humidity, ensuring your hair stays sleek, manageable, and incredibly soft for up to 4 days.