is a 2007 Japanese supernatural horror film written and directed by Sion Sono, and stars Chiaki Kuriyama, Ren Osugi, and Megumi Satō. The title is a Japanese slang shortening Romanization of the English term "extension" from "hair extension".

Plot

Inside a shipping container, customs agents discover a huge amount of human hair used as materials for hair extensions, along with the body of a young girl with a shaved head. The corpse is transported to the morgue, where it is discovered that the girl's internal organs have been harvested by illegal organ traffickers. The morgue's night watchman, a tricophile named Yamazaki (Ren Osugi), is infatuated by the girl's hair and steals the body. He finds that the body has begun to grow hair everywhere, not just on every pore but in areas that shouldn't have hair: the head, vacant eye sockets, tongue, and open wounds. A delighted Yamazaki harvests the hair to make hair extensions to sell. However, the hair controls and kills its wearers, causing them to experience the dying memories of the dead girl, including the last thing she saw on the operating table: the smiling mouth of the man who killed her, unbeknownst to Yamazaki.