ISO 7768:2009 specifies a method for assessing the retention of the original smooth appearance, after one or several cleansing treatments, of the fabrics tested.

This method has been developed for use primarily with Type B domestic washing machines, as defined in ISO 6330, in the cleansing process. However, it may be possible to use it with Type A machines, as defined in the same International Standard. This test method could be used for judging smoothness appearance after other cleansing processes.