Lifebuoy is a soap brand that belongs to Unilever plc, a British consumer goods giant headquartered in London, the UK. Lifebuoy was introduced in the UK by Lever Brothers. It was known as the Royal Disinfectant Soap and was based on carbolic acid, which was discovered by William Hesketh Lever in his search for an effective and cheap soap formula. His project brought him the title of Lord Leverhulme due to his contribution to the health of the nation.