Resulting from 15 years of research and supported by 9 patents and 9 scientific publications, the new‑generation Youth Watery Oil Serum harnesses the revitalising properties of three honeys produced by the black bee – a species recognized for the exceptional quality of its honey. Thanks to its optimised diffusion texture¹, the serum is designed to reach the surface layers of the epidermis to support the skin’s natural revitalisation processes. Skin appears smoother, feels more supple, and looks more radiant, with the appearance of wrinkles visibly improved. Lightweight and universally suitable, the exclusive formula is infused with melt‑in micro‑beads and is composed of 99% naturally derived ingredients². ¹Within the epidermis. ²Calculation based on the international ISO 16128 standard, including water. Developed with the unparalleled formulation expertise of the Guerlain laboratories, the Youth Watery Oil Serum’s advanced diffusion texture¹ helps deliver its age‑defying ingredients to the epidermis. Its light, universal texture—infused with melt‑in micro‑beads—instantly blends with the skin, leaving it feeling comforted and looking revitalised from the first drop.