Soap bubble for its soaps in 1886 using a painting by John Everett Millais of a child playing with bubbles. The Chicago company Chemtoy began selling bubble solution in the 1940s, and bubble solution has been popular with children ever since. According to one industry estimate, retailers sell around 200 million bottles annually. A bubble is made of transparent water enclosing transparent air. However the soap film is as thin as the visible light wavelength, resulting in interferences. This creates iridescence which, together with the bubble's spherical shape and fragility, contributes to its magical effect on children and adults alike. Each colour
Pears (soap) In the late 19th century, Pears used coins countermarked with "Pears Soap" as a way of advertising its soap. The coins used were French, imported by Pears. About the same size and shape as the British pennies at the time, these French coins were generally accepted as pennies in Britain. Lillie Langtry's famous ivory complexion brought her income as the first woman to endorse a commercial product, advertising Pears soap. Her fee was allied to her weight so she was paid 'pound for pound'. Between 1891 and 1925 Pears issued their now-famous annuals, now highly collectible. From the early 20th