Soak in kitchen sink with a bunch of white vinegar. If the glasses don't clear up, the damage has been done and are permanently etched and is not reversible.
Try soaking the inside with vinegar, if it hasn't etched into the surface it should take out the film. If it is really heavy, it may take more than one soak. If it doesn't lessen the film after soakings, it may be etched into the glass and the only way to get rid of that is to replace the glassware.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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Dawn. It cuts more than Grease out of your way.
Soak in kitchen sink with a bunch of white vinegar. If the glasses don't clear up, the damage has been done and are permanently etched and is not reversible.
Try soaking the inside with vinegar, if it hasn't etched into the surface it should take out the film. If it is really heavy, it may take more than one soak. If it doesn't lessen the film after soakings, it may be etched into the glass and the only way to get rid of that is to replace the glassware.
Denture tablets work sometimes. Follow instructions as if your doing dentures. May have to do more than once