Does Bleach Expire? | Apartment Therapy

Does Bleach Expire?

After a year, the active ingredient in bleach — which makes it so good at cleaning and disinfecting — breaks down, so it’ll be less effective. This process can be sped up by improper storage, so it’s important to keep bleach in a cool, dry place away from sunlight, like a cabinet or closet, and out of reach from kids and pets.