Before washing, all you have to do is place the DR.BECKMANN GLOWHITE MAINTAINS WHITENESS 40G in the washing machine's drum. The bag's miraculous contents will instantly eliminate stains, ensuring that your white clothing stays perfectly white. Your laundry stays incredibly white for longer when you use laundry bleaching bags with stain removal. Lower washing temps may cause your garments to turn gray, detergent alone won't make them white again, and bleaching can sully fabrics and colors.