Effax Leder -CombiProduct Features and Benefits The optimum deep cleaning product. Effax Leather Combi quickly takes away the grime and grease. Cleans and nourishes the leather fibre with a unique deep penetrating effect, without making the leather greasy. High quality additives provide the leather fibre with the necessary nourishment so that the leather remains soft, supple and tear proof. If required, the leather can be treated subsequently with Effax Leather Balm,