starting at the edges and slowly spreading until the case looks more like old newspaper than crystal glass. The discolouration comes from sunlight

A clear phone case looks great for the first few weeks. Then the yellow creeps in, starting at the edges and slowly spreading until the case looks more like old newspaper than crystal glass. The discolouration comes from sunlight, body oils, sweat, dirt and the natural ageing of the plastic. While some yellowing is permanent,…