No, Lush is not a Japanese brand.
Lush's Origin
Lush is a British cosmetics company founded in 1995 by a group of friends in Poole, Dorset, England. The company is known for its handmade, fresh, and ethically sourced products, including bath bombs, soaps, shampoos, and skincare products.
Lush's Global Presence
While Lush is not Japanese, it has a global presence with stores in over 50 countries. However, Japan is not one of the countries where Lush has a physical presence.
Conclusion
Lush is a British company with a global presence, but it is not a Japanese brand.