scarlet Nakoma Rit Liquid dye is easy to use and it is a non-toxic liquid dye ready to deliver vibrant colour to almost any type of fabric or fabric blend, including cotton, linen, silk, wool, rayon, ramie or nylon Perfect for rejuvenating. Can be used in a washing machine, plastic container or stainless-steel sink. If dyeing fabric with 35% or more polyester, acrylic or acetate, use Rit DyeMore Synthetic Fibre Dye instead.