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A member asked:
Will expired rubbing alcohol or peroxide become less effective?
A doctor has provided 1 answer
Chemical deteriorate: If you have a bottle of H2O2 that has been sitting for a few years, it would be a good idea to replace it. If you've opened the bottle at any point, its activity is long-gone. An unopened bottle of rubbing alcohol lasts about 3 years and if opened, about 2 years.
Answered 4/2/2020
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