After 15 years of dedicated research backed by 9 patents and 9 scientific publications, the new-generation Youth Watery Oil Serum harnesses the restorative power of three rare black bee honeys. Its innovative, deeply penetrating texture delivers the serum’s benefits straight to the core of the epidermis. As a result, skin regains its plumpness and radiance, while fine lines appear visibly smoothed. Lightweight and suitable for all skin types, this exclusive formula features melt-in micro-beads and is made with 99% naturally-derived ingredients\*. Expertly crafted by Guerlain’s master formulators, the serum’s unique texture ensures powerful age-defying effects from the very first application. It is delicately fragranced with a sun-kissed nectar by Thierry Wasser, Guerlain’s perfumer, offering fresh, light, and honeyed notes.