TikTok Shop Japan Requires Product Information to Use Japanese

TikTok Shop Japan updated its “Supported Languages” seller guidance on September 28, 2026. Under the guidance, product titles, product descriptions, and text in product images for goods sold to Japanese consumers should use natural, accurate, and easy-to-understand Japanese. The requirement applies to both local and cross-border sellers on the Japan site, including stores shipping to Japan from China, the United States, Southeast Asia, and other markets. The platform allows English brand names, technical specifications, or professional terms to remain in Japanese content, but English or machine-translated content cannot serve as the primary product information because it may make the information difficult for consumers to understand. The page does not separately announce a new fine or a specific grace period, but requires sellers to continuously check the languages supported in the current market and include language compliance in product-information quality and consumer protection efforts. For categories such as apparel, home goods, beauty, and 3C accessories that rely on sizing, specifications, and usage instructions, language errors may increase the risk of returns, negative reviews, and complaints. Cross-border sellers should check titles, five-point descriptions, image text, warnings, and after-sales information, and retain records of compliant Japanese copy.