The INKEY List is providing complimentary trial sizes of their recently launched Barrier Serum to enhance skin protection. This offer gives early access since the product hasn't been publicly released yet. To claim your free sample, search and click on sponsored ads for this serum after following Theinkeylist on social media platforms like Facebook or Instagram; engaging with their content can improve visibility of these promotions. Upon spotting an advertisement offering the "Get Free Sample" option, fill in a simple shipping form to receive your sample.