Scouring is the process of removing natural and added impurities from textiles using alkali solutions. The main objectives of scouring are to make the fabric hydrophilic, remove oils, waxes and other impurities, increase absorbency, and prepare the fabric for downstream processing. Scouring works through saponification of oils and emulsification of waxes. The scouring process depends on factors like fiber type, fabric construction and intended dyeing process. Common scouring methods include batch processing in kiers or continuous processing in jigs or boxes. Souring involves treating the scoured fabric with acid to neutralize residual alkali.