cleaning - Silicone bottle nipple, usually has a whitish film after washing and drying? Why is this the case? - Parenting Stack Exchange

I've notice that after we wash & air dry our silicone nipples, frequently they will have a light whitish kind of film on the inside. This film survives boiling water sterilization too. I would

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Tips for Cleaning Bottles and Pump Parts – innobaby

Parent's Choice Bottle and Nipple Brush Set, Pack of 2

Parent's Choice Bottle and Nipple Brush Set, Pack of 2