Blacker than the Blackest

摘要

Today, black-dyed fabrics are the most popular evening and fashion wear. Dyers across the world have always struggled to achieve deeper blacks or a cellophane-black shade - that is to say, the 'blackest black'. The reason for this is that fabric reaches a saturation point, beyond which addition of dyestuff does not increase the depth and, if anything, leads to poor wash fastness.