Specific auxiliaries for soaping / washing, post-dyeing and digital printing processes; generally chemical structures with a high dispersing and/or anti-redeposition and/or reducing capacity. This category also includes products for cleaning dyeing machines.

Being based on acids, some Isopon products are also used in preparation to neutralise the alkali properties of fibres after the various alkali processes (desizing, alkali scouring, bleaching, caustic soda process and mercerizing).