Abrasive Wear or Frosting
Frosting is a condition of color change often occurring in fabrics and upholstery, but can also result in rugs and carpeting. It is caused by preferential abrasion or a wearing away of colored fibers and dye from the fabric or pile surface. This occurs primarily in those areas whereuse, wear and abrasion are most concentrated. For example, in upholstery it could be on the front edges, side and top of the seat cushion, or arm areas. In draperies it may be worn sections at the hem while in carpets or rugs it would be the wearing away of surface pile that then reveals a slightly different or more original pile color underneath.
To textile scientists this condition is known as "frosting"...
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