The classic laundry brand Rinso is a five-letter word. It was first introduced in 1908 by the Lever Brothers, a British soap and detergent manufacturer. The brand was initially marketed as a laundry soap for hand washing, but it eventually became a popular brand of laundry detergent. Rinso was one of the first detergents to be sold in powder form, and it was also one of the first to be sold in boxes. The brand was eventually discontinued in the late 1990s, but it remains a classic laundry brand that is still remembered today.