Minerals and gems are classified by their physical properties, including hardness, luster, color, density, and magnetism. They're also identified by the ways in which they break, or the type of ...
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Is hard water the real culprit for dull hair?Ever felt that your hair is looking dull and lacks luster even after using high-quality ... Hard water contains high levels of minerals such as magnesium and calcium that leave a residue on ...
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