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Glitter describes an assortment of very small, flat, and reflective particles. When these particles are applied to surfaces, they each reflect light in different angles causing the surface to sparkle or shimmer. Glitter is similar to, but smaller than confetti or sequins. Glitter has been produced and used decoratively since prehistoric times from many different materials including mica, insects, glass, and now plastic.
Today over 20,000 varieties of glitter are manufactured in a vast number of different colors, sizes, and materials. Over 10,000,000 pounds (4,500,000 kg) of glitter was purchased between the years of 1989 and 2009 alone. Commercial glitter ranges in size from 0.002 square inches (1.3 mm2) to 0.25 square inches (160 mm2). First, flat multi-layered sheets are produced combining plastic, coloring, and reflective material such as aluminum, titanium dioxide, iron oxide, and bismuth oxychloride. These sheets are then cut into tiny particles of many shapes including squares, rectangles, and hexagons.
The first production of modern glitter has sometimes been credited to American cattle farmer and machinist, Henry Ruschmann, shortly after the start of the Second World War. With German glass glitter unavailable due to the war, Ruschmann found a market for scrap material ground into glitter made of plastics. He founded Meadowbrook Inventions, Inc. in Bernardsville, New Jersey, and the company is still a producer of industrial glitter today.
As early as 30,000 years ago, flake mica was used to give caves paintings a glittering appearance. Primitive humans are believed to have used cosmetics, which may have included powdered hematite, a sparkling mineral. Over 6,000 years ago, the ancient Egyptians produced glittering cosmetics from the iridescent shells of beetles as well as finely ground green malachite crystal. Prior to modern plastics, particles of glass were used to create glittering surfaces, and glass glitter is still produced commercially.
Glittering surfaces have been found to be used since prehistoric times in the arts and in cosmetics. Sparkling fabrics have come into fashion through the ages. Prior to fabrics made with modern glitter, sequins were sewn or woven onto fabric to give it a glittering appearance. Today, edible glitter made from gum arabic and other ingredients is even used by culinary artists.
Glitter is used in cosmetics to make the face or nails appear more shiny or sparkly. Additionally, it is used in children's arts and crafts to color and texture items. Because particles are so small but are usually colorful and bright, they often remain stuck to clothing, skin, and furniture and can be a hassle to remove. Due to its unique characteristics, glitter has also proven to be useful forensic evidence. Because of the tens of thousands of different commercial glitters, identical glitter particles can be compelling evidence that a suspect has been at a crime scene. Glitter particles are easily transferred through the air or by touch, yet cling to bodies and clothing, often unnoticed by suspects.
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