This in-depth narrative explores how Lever Brothers’ Lifebuoy soap campaign transformed global hygiene habits, making daily showering a cultural norm. Through powerful marketing tactics that blended fear, science, and morality, the campaign reframed body odor as a social disaster and cleanliness as a civic virtue. It traces Lifebuoy's evolution from germ-fighting “health soap” to a globally endorsed hygiene icon, examining its colonial reach, celebrity partnerships, and lasting impact on consumer behavior and public health. This essay reveals how advertising shaped not only hygiene habits but modern identity.