Abstract: Sunshades for automobile windows, particularly for shading an infant riding in a child car safety seat from the rays of the sun. A vehicle sunshade includes a sheet of generally transparent flexible shading material which either self-adheres to the interior side of a vehicle window, or which has an attachment for attaching the sheet of generally transparent flexible shading material to the interior side of a vehicle window. The sheet of shading material has a photochromic characteristic such that the sunshade turns relatively darker when exposed to sunlight and relatively lighter or more transparent when the intensity of sunlight decreases.