3D sheet mask buzzLifeword-of-mouth project. 1000+ people buzzLeaderexperienced the "Super Penetrating 3D Mask Aging Care (Moisturizing)" of the Hibisei brand, and word-of-mouth project was conducted to tell their friends who use the sheet mask. Leaflets were also distributed to promote product understanding. The thick sheet, rich serum, and other product features that are difficult to convey in stores were actually experienced, enabling word-of-mouth promotion by targeting friends who were likely to like the product with a real sense of its value and effectiveness. The fact that friends were able to correctly convey the advantages of the product led to promotion of continuous use, increased loyalty to the brand, cross-selling to other series, and increased willingness to purchase the product.