The aim of this research was to minimise the damage of keratin fibres during wet chemical processing including dyeing and bleaching, and to recycle the bleach and dyebath water using microfiltration technique. Low temperature dyeing of cashmere fibres using Miralan TOP process provided sufficient dye exhaustion at lower temperatures compared to conventional Lanaset dyeing system, which resulted in superior strength properties of fibres dyed by Miralan TOP process.