L'Oréal Japan, the Japanese subsidiary of the world's largest cosmetics company, L'Oréal Group, has undertaken its first major renovation since relocating Head Office to Shinjuku Park Tower in 2006. Named "Beauty Valley" under the concept of "EN" (縁), the renovated office embodies the desire to create a place where beauty is born, connecting people with Japan, customers, business partners, and employees. concept design incorporates the four seasons (spring, summer, autumn, and winter) as themes for each area, and features furniture and decorations showcasing Japanese craftsmanship, incorporating Japanese beauty throughout. Furthermore, approximately 4,400 units of L'Oréal's products—around 60 different types, including eyeshadow, foundation, and lipstick—were upcycled before disposal, utilizing them in paints, lampshades, and tiles. While pursuing sustainable beauty, the office fully expresses L'Oréal's aesthetic by installing product display fixtures similar to those found in retail stores. Moreover, the office is designed in accordance with LEED standards, an international certification for sustainable buildings, ensuring energy efficiency and waste management, paying meticulous attention to details such as light, sound, and materials. Our company participated in this project as the overall construction company for interiors.