Stains on fabrics – Water glass
Water glass. Hardened stains cannot be removed due to the formation of a water-insoluble silicon compound. For this reason, water glass stains should be removed immediately after they appear, washing them with warm water. This procedure is repeated several times. You must take into account the possibility of discoloration of the fabric, because water glass has an alkaline reaction (alkalia). Products made of polyvinyl chloride fibers can only be washed with lukewarm water.