The film "Hair" is a horror-comedy advertisement we created for the hair transplant brand "Bilian Sheng". Based on the idea of "if Sadako got hair loss", we made the extension creation and told the story from the perspective of a down-and-out salesman. It not only has a sense of immersion with progressive layers, but also has a certain degree of rationality in the plot. Meanwhile, the concept of hair transplantation and hair care advocated by the brand "Bilian Sheng" is necessary for Sadako, which can reduce the frequency of replacement and grooming, and further reflect the needs of workers who need hair transplantation in real life. It can achieve the promotional effect imperceptibly. Moreover, horror-comedy genre is more likely to be accepted by young people, which is conducive to secondary dissemination.