"the percentage of Americans working outdoors fell from 90 percent at the beginning of the 19th century to less than 20 percent at the close of the 20th century."
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Known as Colour Alchemy, the dye has a formula is that it allows it to react directly to temperature and use different wavelengths of light to emphasize the color. Each color is described by the brand as “holographic” because microprisms in the formula shrink and expand to produce the different shades.