Unique to Selesital Soap: At Selestial Soap, we hate suds. Suds leave a residue on fabric that attracts dirt and grease, dulls colors and affects breathability. The residue often contains chemicals that irritate skin and cause allergic reactions. Selestial Soap is effective on all washable fabrics and all colors (be sure you follow those label instructions) in any type of washing machine in any temperture. Go ahead and save energy by washing in cold water. Selestial Soap can handle it.