You can discover this product sampling opportunity as a sponsored ad on Facebook. To request a free sample of Izia La Nuit Eau De Parfum by Sisley, you should first follow the official Sisley UK Facebook page. Then keep an eye for the personalized ad that should appear in your newsfeed. Once you spot it, tap the "Sign Up" button, and a pop-up form should appear. Fill in the form to provide your shipping address, and Sisley UK would send you a free sample of Izia La Nuit Eau De Parfum. Good luck!