Brightens and whitens undyed fabrics. Causes white fabric to glow blue under blacklight. Commonly known in the laundry industry as "bluing," optical brighteners breathe new life into vintage, yellowed, and untreated fibers.

An easy-to-use formula, Optical Brightener can be used to dye fabric on the stovetop, in a washing machine, or using the soda ash batching method as in tie dyeing. It is a great start to any project requiring clean, bright whites, or for that radiating glow for a night out.

8oz