The secret to successful natural dyeing of cellulose fibres, yarns and fabrics such as cotton and linen is thorough scouring. The scouring process removes natural oils, waxes and pectins from the fibre so that the dyes can penetrate the fibre more readily. Scouring and mordanting cellulose fibres is a more time consuming process than when mordanting wool and protein fibres. But it is well worth taking the extra time to prepare your fabric before you put it into the dyepot. read more