 It was well known for its red and yellow packaging, red color and octagonal shape, as well as its carbolic aroma.Sometime in 1951 or 1952, due to declining sales, Lever Bros. experimented with adding perfumes to the soap, and made the changes permanent in 1954.Earlier experiments in 1936, 1938, 1939 and 1940 also added an artificial scent to the soap, but generally lasted only one batch.