Direct exposure to sunlight or artificial lighting is dangerous to fabrics. Since many dyes are sensitive to prolonged exposure to light, colors can fade to lighter shades and even white clothing can fade to yellow.
In some cases, light fading occurs on only one side of the fabric or where an edge is exposed to a light source. On some fabrics, such as silk, fading can occur in a relatively short time.
While clothes should be removed from the poly bags from the drycleaner, it’s a good idea to keep the paper dust covers on the shoulders for protection, since the shoulder area can experience the most dramatic fading.
Fading cannot be corrected, so remember do not store items in direct sunlight, use low wattage bulbs in closets and turn off closet lights when not needed.