Removes yellowing caused by rust and hard water. One step wash & whiten. For washable white fabrics only uniforms, tops, pants - and much more! Whink No More Yellow! is a powerful whitener with detergent that removes rust stains and hard water build-up while cleaning washable white fabrics in one easy step. This unique blend of whitener and detergent is tough on rust and safe on white fabrics. No More Yellow! also prevents rush, hard water minerals and dirt from redepositing on fabric during the rinse cycle. Use No More Yellow! to remove minor dye stains from white fabrics washed by mistake with colored items. Safe in septic tanks. Contains no phosphates. Proudly made in the USA. Made in the USA.