A fastness is a place, such as a castle, which is considered safe because it is difficult to reach or easy to defend against attack. This test is designed to determine the degree of color which may be transferred from the surface of a colored fabric to a specify test cloth for rubbing (which could be dry and Wet).
If the color fastness to rubbing is good then it's other properties like washing fastness and durability etc., improves automatically because the rubbing is a method to check the fixation of the color on the fabric. So if the fixation is good it's washing properties will be good.
In order to that our company ( EL SHEHAB ) keen to be under supervising of OEKO-TEX STANDARD 100 certificate.