LED lights are ruing “whiter than white” detergent claims

For years, companies have been adding whiteners to laundry detergent, paints, plastics, paper and fabrics to make whites look “whiter than white,” but now, with a switch away from incandescent and fluorescent lighting, different degrees of whites may all look the same, according to experts in lighting. “Retailers have long been concerned with the color-rendering qualities of their lighting, but less aware how light sources render white,” said Kevin W. Houser, professor of architectural engineering, Penn State.