A powerful cleaner that removes construction residues from natural stones, restoring their natural look. It cleans in depth accumulated dirt, salts, mud rain, black spots, mold as well as oils, coffee, rust and non cured paint stains. It does not affect the natural look of stones and/or grouts. Its use is necessary prior to waterproofing and/or decorating a surface, before the use of any varnish. It is recommended to use the product 28 days after grouting.