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What is Laundry Bluing?

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What is Laundry Bluing?

Photo by MML

Definition:

Bluing products improve the whitening of fabrics in the laundry by counteracting the natural yellowing that occurs during laundering with a blue pigment. Use only on white garments, following package directions for dilution for best results.

Bluing is a colloidal suspension of a very fine blue iron powder and water. Other ingredients include a pH balancer and a biocide to prevent the buildup of algae and bacteria.

Adding the blue tint to the final rinse when washing white clothing increases the light reflection off the fabric making it appear whiter and brighter.

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