Shoe polish (or boot polish), is a waxy paste, cream, or liquid used to polish, shine, and waterproof leather shoes or boots to extend the footwear's life, and restore, maintain and improve their appearance.
Various substances have been used as shoe polish for hundreds of years, starting with natural substances such as wax and tallow. Modern polish formulas were introduced early in the 20th century and many of those original formulations are still in use today. Today, shoe polish is usually made from a mix of natural and synthetic materials, including naphtha, turpentine, dyes, and gum arabic, using straightforward chemical engineering processes. Shoe polish is usually flammable, can be toxic, and, if misused, can stain skin. It should be used in a well-ventilated area with care taken to protect clothes, carpet and furniture.
The popularity of shoe polish paralleled a general rise in leather and synthetic shoe production, beginning in the 19th century and continuing into the 20th. The World Wars saw a surge in demand for the product, in order to polish army boots.
Shoe polish is applied to the shoe using a rag, cloth, or brush. Shoe polish is not a cleaning product, and therefore the footwear should be both clean and dry before application. A vigorous rubbing action to apply the polish evenly on the boot, followed by further buffing with a clean dry cloth or brush, usually provides good results. Another technique, known as spit-polishing or bull polishing, involves gently rubbing polish into the leather with a cloth and a drop of water or spit. This achieves the mirror-like, high-gloss finish sometimes known as a spit shine or bull which is especially valued in military organizations. Despite the term, saliva is less commonly used as the vehicle or diluent with polish than is water. Polishes containing carnauba wax can be used as a protective coating to extend the life and look of a leather shoe.
Shoe polish may be purchased pre-soaked into a hard sponge, which can be used to buff leather without needing to apply any additional polish to either the leather or the sponge. This is usually known as an applicator. A number of companies that manufacture shoe care products also sell a liquid shoe polish in a squeezable plastic bottle, with a small sponge applicator at the end. To decrease its viscosity, bottled polish usually has a very low wax content.
There are many products closely related to shoe polish, but not strictly considered as such. Other chemical products may be used to clean and shine shoes—in particular whiteners for white shoes, and a variety of sprays and aerosols for cleaning and waterproofing suede shoes. A banana peel can also be used to effectively shine shoes, but it is not recommended.
Although shoe polish is primarily intended for leather shoes, some brands specify that they may be used on non-porous materials, such as vinyl. The polish is generally the same colour as the shoes it will be used upon, or it may be neutral, lacking any intrinsic colour.
Before the twentieth century
Since medieval times, dubbin, a waxy product, was used to soften and waterproof leather; however, it did not impart shine. It was made from natural wax, oil, soda ash and tallow. As leather with a high natural veneer became popular in the 18th century, a high glossy finish became important, particularly on shoes and boots. In most cases, a variety of homemade polishes were used to provide this finish, often with lanolin or beeswax as a base.
In the 19th century many forms of shoe polish became available, yet were rarely referred to as shoe polish or boot polish. Instead, they were often called blacking (especially when mixed with lampblack), or simply continued to be referred to as dubbin. Tallow, an animal by-product, was used to manufacture a simple form of shoe polish at this time. Chicago, Illinois, where 82% of the processed meat consumed in the United States was processed in the stock yards, became a major shoe polish producing area.
In 1832, James S. Mason of Philadelphia began the commercial production of shoe blacking and inks. In 1851, James S. Mason & Co. constructed a building at 138/140 Front St. where ultimately ten million boxes were produced annually, to hold tins of blacking produced by two hundred employees. Later, tins of blacking were labeled as Mason Shoe Polish. This business ceased operation in 1919 and the building was razed in 1973.
Other early leather preserving products included the Irish brand Punch, which was first made in 1851. In 1889, an English man by the name of William Edward Wren, started making shoe polishes and dubbin under the brand name Wren's. In just 3 years, he won the “First in the Field – First Award Leather Trades Exhibition 1892″ award which was awarded by the Leather Trades Exhibition held in Northampton, the centre of Britain’s boot making industry. This signified the importance and prestige of the exhibition in the trade and was a recognition of Wren's quality. In 1890 the Kroner Brothers established EOS, a shoe polish factory in Berlin, which serviced the Prussian military. It finally closed in 1934 when the Nazis forbade Jews to operate a business. The German brand, Erdal, went on sale in 1901.
Prior to 1906, shoe polish was not well known as a purchasable product, nor was it particularly sophisticated. While sales were not especially high, a few brands, like Nugget, were available in the U.K. during the 19th century. The practice of shining people’s shoes gradually caught on and soon many shoeshine boys in city streets were offering shoe shines using a basic form of shoe polish along with a polishing cloth.
The first shoe polish to resemble the modern varieties (aimed primarily at inducing shine) were the British and British Commonwealth brands like Cherry Blossom, Kiwi and Wren's. An advertisement published in March 1947 by Wren's claimed that William Wren originated the first wax polish in 1889. As the advertisement was endorsed with the Royal Warrant, it's claim would be deemed creditable. However, the most well known brand was Kiwi. Scottish expatriates William Ramsay and Hamilton McKellan began making "boot polish" in a small factory in 1904 in Melbourne, Australia. Their formula was a major improvement on previous brands. It preserved shoe leather, made it shine, and restored color. By the time Kiwi Dark Tan was released in 1908, it incorporated agents that added suppleness and water resistance. Australian-made boot polish was then considered the world's best. Black and a range of colors became available, and exports to Britain, continental Europe, and New Zealand began, although the polish is now made in the Far East. Previously owned by the Sara Lee Corporation since 1984, Kiwi was sold in 2011 to SC Johnson.
Ramsay named the shoe polish after the kiwi, the national bird of New Zealand; Ramsay's wife, Annie Elizabeth Meek Ramsay, was a native of Oamaru, New Zealand. It has been suggested that, at a time when several symbols were weakly associated with New Zealand, the eventual spread of Kiwi shoe polish around the world enhanced the Kiwi's popular appeal and promoted it at the expense of the others.
A rival brand in the early years was Cobra Boot Polish, based in Sydney. Cobra was noted for a series of cartoon advertisements in The Sydney Bulletin, starting in 1909, using a character called "Chunder Loo of Akim Foo." Chunder is Australian slang for vomit, and possibly originated through the rhyming slang of Chunder Loo and spew (another slang word for vomit).
Surge in popularity
At the end of the 19th century, leather shoes and boots became affordable to the masses, and with the outbreak of World War I in 1914, the demand for large numbers of polished army boots led to a need in the market for a product that would allow boots to be polished quickly, efficiently and easily. The polish was also used to shine leather belts, handgun holsters, and horse tack. This demand led to a rapid increase in the sales of shoe and boot polish. The popularity of Kiwi shoe polish spread throughout the British Commonwealth and the United States. Rival brands began to emerge, including Shinola and Cavalier (United States), Cherry Blossom (United Kingdom), Parwa (India), Jean Bart (France), and many others. Advertising became more prominent; many shoe polish brands used fictional figures or historical characters to spread awareness of their products. In the German documentary of 1927 Berlin: Symphony of a Great City, a scene focuses on shoe shining with a polish called Nigrin sporting the face of a Negro.
Shoe manufacturing improvements in the mid-19th century allowed for factories to produce large amounts of shoes made of leather, and later synthetic materials. This increase in leather shoe production continued well into the 20th century and led to a surge in the number of retail shoe stores in the industrialized world, and subsequently a call for shoe polish by footwear consumers.
Shoe polish was to be found just about everywhere Allied troops ventured. American war correspondent Walter Graeber wrote for TIME magazine from the Tobruk trenches in 1942 that "old tins of British-made Kiwi polish lay side by side with empty bottles of Chianti." A story indicative of the rise in global significance of shoe polish is told by Jean (Gertrude) Williams, a New Zealander who lived in Japan during the Allied occupation straight after World War II. American soldiers were then finding the dullness of their boots and shoes to be a handicap when trying to win the affections of Japanese women. U.S. military footwear of the time was produced in brown leather with the rough side out.
When the British Commonwealth Occupation Forces arrived in Japan—all with boots polished to a degree not known in the U.S. forces—the G.I.s were more conscious than ever of their feet. The secret was found to rest not only in spit and polish, but in the superior Australian boot polish, a commodity which was soon exchanged with the Americans on a fluctuating basis of so many packets of cigarettes for one can of Kiwi boot polish.
Shoe polish products are low-value items that are infrequently purchased, as a single can might last several months for even the most frequent user. Consumer demand is inelastic and largely insensitive to price change, while sales volumes are generally low. In the shoe polish market as a whole, some 26% of turnover is accounted for by pastes, 24% by creams, 23% by aerosols, and 13% by liquids. In recent years, the demand for shoe polish products has either been static or declined; one reason is the gradual replacement of formal footwear with sneakers for everyday use.
There are numerous branded products available, as well as generic store brands. There are two chief areas of shoe polish sales: to the general public, and to specialists and trade, such as shoe repairers, and cobblers. The sales percentages between the two outlets are roughly comparable.
Kiwi remains the predominant shoe polish brand in most of the world, being sold in over 180 countries but is often see as a mass market product more known for it's cheap prices rather than quality. Today, it is manufactured in Australia, Canada, France, India, Pakistan, South Africa, Spain, the United Kingdom, and the United States. Other leading brands include Kelly's, Shinola, Lincoln Shoe Polish, Meltonian, Angelus, Woly, Salamander, Collonil and Cherry Blossom.
Kiwi was acquired by the American company Sara Lee following its purchase of Reckitt and Colman in 1991 and Knomark with its brand Esquire Shoe Polish in 1987. The Federal Trade Commission ruled that Sara Lee had to divest its ownership of these companies in 1994 to prevent it from becoming a monopoly. Since this ruling, Sara Lee has been prevented from acquiring any further assets or firms associated with chemical shoe care products in the United States without prior commission approval. The Competition Commission in the United Kingdom investigated the potential monopoly of Sara Lee in the shoe care industry. By the end of 2010, Sara Lee's Household & Body Care division (which included KIWI) was acquired by S.C.Johnson & Son.
Empty shoe polish bottles can be used to create graffiti, by dumping out the polish inside and filling it full of ink or paint. They are used as a cheap alternative to markers designed for graffiti, and are much more widely available. Kiwi polish was also used heavily by the U.S. Military. 
Composition and toxicology
Shoe polish consists of a waxy colloidal emulsion, a substance composed of a number of partially immiscible liquids and solids mixed together. It is usually made from ingredients including some or all of naphtha, lanolin, turpentine, wax (often Carnauba wax), gum arabic, ethylene glycol, and if required a colourant, such as carbon black or an azo dye (such as aniline yellow). It typically has a specific gravity of 0.8, is negligibly soluble in water, and is made of between 65 and 77% volatile substances—usually naphtha. The high amount of volatile substances means that the shoe polish will dry out and harden after application, while retaining its shine.
Lanolin, a hydrophobic grease from wool-bearing animals such as sheep or goats, acts as both a waterproofing wax and a bonding agent, giving the shoe polish its greasy feel and texture. It prevents the naphtha from evaporating until the polish has been spread and buffed into a thin film on the leather surface. An essential ingredient in shoe polish is a thickener; without this, the polish would be too runny, making it difficult to use. Gum arabic, a substance from two sub-Saharan species of the acacia tree, is commonly used to increase the viscosity of the product.
Shoe polish contains chemical substances which can be absorbed through the skin, or inhaled. When handling shoe polish, one should ideally wear gloves, and stay in a well-ventilated area. Shoe polish should be kept out of reach of children and animals. It can stain the skin for a protracted period of time, and will cause irritation to the eye if there is direct contact.
Shoe polish can be manufactured using large vats, reasonably powerful heaters and air conditioners. There is no set method of manufacture, although most methods use pressures of two atmospheres to ensure the naphtha does not boil off, and temperatures of up to 85 °C.
The first step in the manufacture of a typical shoe polish is the melting of the wax with the highest melting point in an electric heater. Following this, all other waxes are added, usually by descending order of melting point. While this wax is held at a constant temperature, the emulsion—a mixture of the various oils and, if used, fats, is then heated separately, at around 85 °C. The heated emulsion is then added to the waxes, along with distilled water. When the mixture reaches around 80 °C, turpentine oil is added. This mixture is then mixed and continually stirred for half an hour. Dyes are added and mixed in turpentine oil if it is not a neutral polish. The mixed mass is reduced slowly to 50 °C, and as its viscosity increases, it is poured through a closed funnel into a cooling chamber. The poured mass is allowed to settle slowly, providing uniform distribution. The process is considered straightforward and the required equipment is relatively easy to acquire. The cost of establishing shoe polish manufacturing facilities has been estimated at around $600,000 (as of 2005).
Shoe polish is traditionally packaged in flat, round, 60-gram (2-ounce) tins, usually with an easy-open facility. Because the amount of shoe polish that needs to be applied is small, and the shoe polish will desiccate due to volatile ingredients, such as naphtha, a large container would dry out before being fully used. The traditional flat, round tins have since become synonymous with shoe polishes.
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