Huntsman has developed a new dyeing solution which it claims sets a new standard in terms of wash-fastness and colour saturation for the polyamide/elastane blends favoured in the swimwear business.Vibrant blocks of colour and high-contrast black and white continue to dominate in the swimwear market.But achieving these deep shades and striking contrasts is difficult on the polyamide/elastane (PA/EL) blends favoured in the swimwear business. These blends deliver high resilience and elasticity, but tend to have limited wash- and wet-fastness. Conventional PA dyes bond to the PA fibres with only weak links and can bleed onto adjacent fibres during home laundering and fade dramatically with repeated washing.