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Perfume / Home Fragrance Store. on Twitter: "A Perfume/Fragrance concentration is a percentage of perfume composition (a blend of natural and chemical ingredients) in a fragrance. The concentration also impacts on the
Perfume compositions and perfumed articles containing esters of substituted bicyclo (2.2.1)heptane- and heptene-carboxylic acids as perfume base - Patent 0040894
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