bluing for whiter whites

What’s in this stuff – the short version

Mrs Stewart’s Bluing is a simple, non-toxic, concentrated blue liquid that whitens fabric without bleaching or any hazardous chemicals.

What’s in this stuff – the longer version

Mrs Stewart’s Bluing is a simple, concentrated blue liquid that optically whitens white fabric. It is made of a very fine blue iron powder suspended in water – a colloidal suspension – which adds a microscopic blue particle to fabric.

To prevent the build-up of algae and bacteria, a non-toxic amount of a pH balancer and a biocide is added.

Mrs Stewart’s Bluing is non-toxic, biodegradable and non-hazardous, so doesn’t mess up our environment.

But remember, Mrs Stewart’s Bluing is not a detergent and will not remove stains: it’s simply a fabric whitener.