The term 'Dove Rival' refers to the four leading brands of bar soap in the United States: Camay (5 letters), DIAL (4 letters), IVORY (5 letters), and CARESS (6 letters). Camay is a brand of beauty soap that has been around since 1926. DIAL is a brand of antibacterial soap that was first introduced in 1948. IVORY is a brand of mild soap that has been around since 1879. CARESS is a brand of beauty bar soap that was first introduced in 1956.