For today's modern fabrics that require a quality detergent and a safe bleach agent. It's safe on all whites and colorfast washable fabrics. ULTRA WASH removes oxidizable stains and helps prolong and brighten linens and garments. Even helps to revitalize the color of duel and faded fabrics, reduce linting and prevents tensile strength loss. It works well on polyester and cotton; also it's compatible with all detergent boosters, enzyme and solvent spotting agents. Concentrations will vary according to water hardness, soil load, and water temperature, time and machine efficiency.