Lifebuoy is a brand of soap marketed by Unilever. Lifebuoy was originally, and for much of its history, a carbolic soap containing phenol (carbolic acid, a compound extracted from coal tar).
Lifebuoy is a soap brand owned by Unilever.  It was initially and for a significant portion of its existence, a carbolic soap that contained phenol (carbolic acid, derived from coal tar).