Dolly Blue

Dolly Blue

About Dolly Blue

Bluing, laundry blue, dolly blue or washing blue is a household product used to improve the appearance of textiles, especially white fabrics. Used during laundering, it adds a trace of blue dye (often synthetic ultramarine, sometimes Prussian blue) to the fabric.

Contributions by VMS Mosaic, Herostratus, and Pollyflinders234.