As the society gets into the high technology, lifestyle and culture of consumer changes fast and it is getting more fast nowadays. And It is becoming more important for the marketers and designers to understand its trends and analysize market and the consumer needs correctlly. In 1990s, the yearly income of consumers has increased, and the female became one of the most powerful consumer groups in the society. But the emerging power of new generations which are called generation X or Xers is the most characteristic image of 1990s. Xers are from late teens to the carly tweenties and they have their specific and pecular consumer behavior. They are usually compared to the Baby Boomers generation, the former generation of Xers and the great bubble of affluent individuals born between 1946 to 1964. Boomers are ideological, but the Xers are materialistic and individualistic. As the Xers came of age in a world, the "We Products` which Boomer preferred has changed into the `Me Products` which show the individualistic behavior of Xers consumer. The value of design and the style of products became more important purchasing factor to the Xers than the Boomers. The Beauty Industry, which are Cosmetics, Diet, and Fitness nowadays got into the market and growing fast to satisfy the Xers` needs for beauty. From 1988 the Western style Fast Food became popular to the Xers and the teenagers Obsity became a social issue. In 1994, Diet Industry growed 40% in a year, and lots of Company got into the Diet Market and competed each others by creating vanity Images of beauties. Without the analysis of Xers and the biological importance of Diet, it only sells nothing but fake images. The Xers don`t trust Diet Programs anymore, and their lack of imformation about good Diet Program makes their health in danger. Xers are obsessed for having beautiful shape, and the excessive diet damaged their health. It is the advertiser and designer who can help them have good way of keeping their shape by giving them a helpful tips for their diet instead of selling them vanity images of beauty. The purpose of this thesis is to show the importance of communication between designers and the consumers, who are Xers and are a dominant market leader by analysis of Xers` behavior and suggesting the proper way of communication. The process of this thesis works first by the analysis of Xers` survey which was done by 100 female Xers and prove its value by suggesting design solution for the Diet package.